spark plug resistance does it really matter

A resistor spark plug will delay the time when the spark jumps. They were out of the box right at .035 and I set them at .040. All internal combustion engines have a spark plug, or in the case of diesel engines, a glow plug, to initiate combustion in the engine. 6. hide. what does this mean to you? At zero resistance coil discharge is completed. On the port engine, I gapped all of the plugs. Does the type of spark plug really matters? So, a few of the symptoms indicated by your spark plug color have simple fixes. Three Main Types of Spark Plug. View Poll Results: Does the brand of spark plugs matter? Why does Resistance Matter? Until that happens NO CURRENT FLOWS. Ac delco (std plug) Autolite (std plug or AR racing plugs for turbo/boosted/nitrous engines . The readings are as follows. Wire 1: 4.8k Ohms Wire 2: 5.5k Ohms Wire 3: 5.5K Ohms Wire 4: 6.2K Ohms Archived. I use mine in line between the spark plug installed normally in the engine and the plug wire. If it tells you anything. Verifying that the electrode gap of the spark plug is facing the air/fuel mixture allows the mixture to ignite more efficiently. cheap plug wires start gaining resistance in less than a year. NGK (V power tip) I run/use mostly std AC delco plugs unless the combo calls for something AC don't have. Knowing how to read spark plugs can help you identify potential engine-related malfunctions early on and save you expensive repairs. The spark plug color can provide evidence of what is happening inside the engine. it means longer starts, less performance, economy, and higher operating and maintenance costs. I'm looking at changing my spark plug wires, and am torn between a few sets. Copper spark plugs are generally considered to have the best performance of any spark plug type. A Taylor ThunderVolt plug wire could easily test at around 40 ohms per foot, which means reduced-resistance and more energy applied to the spark plug. I think the resistive path is related to spark doration. Spark ignition is resistive sensitive. You could use regular, deep well sockets on spark plugs, but do not do it. If your car is pre-1980 then there is a very good chance this is the spark plug wire variety you’re using. 06-10-2009, 07:32 AM OEM type plug wires are usually a carbon fiber that helps minimize RF noise. 1. Depending on your engine, the plug generally dictates the angle it is going to have. This means that the spark must jump the 7/16" gap and the spark plug gap in the motor while running. It was due for plugs and wires, so I picked up a set of NGK's as well as the NAPA premium (Belden blue) wires. For example, NGK, Autolite, Champion, Bosch, Denso, AC Delco, will all tell you not to use anti-seize with their modern coated spark plugs. A paltry 5KOhms does not do anything when compared to the nearly infinite resistance of the gap itself (until the plug fires that is). If the spark plug is placed too close to the engine body then it can have a welding effect and render the spark plug useless and this could happen to any of the plugs, not just for copper ones. Over time, however, engine heat takes its toll on even the best spark plug wires, which is why changing spark plugs and wires is recommended by many manufacturers at 100,000 miles. So, if your vehicle has a little less spunk lately; it might be time to change your spark plugs. But for engine power to be generated from this mixture, it needs to be ignited by an electric current. : Yes, the brand matters when it comes to performance (better MPG, etc). By reducing the resistance in the plug wires, the coil does not have to work as hard because less voltage is lost to the resistance between the coil and spark plug. Introduction. The spark plug is the device that causes the fuel/air mixture in the cylinder to burn. I'm just curious about the wide range of resistances and whether it matters. Does the type of spark plug really matters? As you may very well know, compressed air and fuel are mixed together in the internal combustion chamber. This is potentially different from what advertising companies suggest, but the other metals are, unfortunately, not as conductive in general as copper is. So with my positive in the spark plug lead and my negative just on the earth for the coil, I … The Wilmar W30936 5 Piece Spark Plug Socket set is a complete spark plug socket set that is very reasonably priced. Whether you have resistance or not does not matter. The NGK 6619 Iridium IX Spark Plugs snags the top pick in our spark plug comparison because they offer the best mix of high-performance, fuel efficiency, durability, and dependability. Spark plugs are responsible for producing […] Close. Many spark plug manufacturers have issued statements saying that using anti-seize on spark plugs in 2018/19 is not advised. If the insulation resistance drops, there also occurs a drop in electrical voltage supplied to the spark plug from the ignition system. According to BMW service sheets, the spark plug(s) on the F650 should be changed every 10,000kms (6,000miles). Voltage builds in a ramp regardless of how the spark is generated. The main difference between them is that one set is 350 ohms resistance, and the others are 500 ohms. In my drag car, street car nd every engine I build for customers.. 1 of 3 brand plugs goes in it Ac delco (std plug) Autolite (std plug or AR racing plugs for turbo/boosted/nitrous engines NGK (V power tip) I run/use mostly std AC delco plugs … The spark needs of a stock 216-cubic-inch inline-six Chevrolet are drastically different than those of a supercharged big-block Ford. (PN 7000014) Anyhow, I figured I would check the resistance of the new wires before I put them on. 10 comments. Changing your spark plug(s) can be an easy task - it just depends on your model of bike and how easy it is to access to spark plug(s). Now is the time to add a quality set of spark plug sockets to your toolbox. The mechanics behind indexing a set of plugs are quite simple. Resistance in spark path was used before radio was common, before RFI was an issue. Types of spark plug wires. Size matters—but not in the way you think. Plug wires and resistance...does it really matter? Over 95 % of American cars were fitted with these, and for good reason, if they were fitted as standard you should try to … Too small of a gap and the electrodes themselves will have an increased likelihood of quenching the very small initial burn, known as the flame kernel. To test the resistance for the secondary coil I'm going to put the positive lead in where the spark plug goes and then I can put my negative lead on to either of the wires for the primary coil. Copper Spark Plugs. Your spark plug condition not only can tell you if it’s time for replacement, but can speak volumes about the engine as well. report. Spark plugs serve a very important purpose for the internal combustion engine. Once the plug fires the resistance comes into being. Do spark plug wires matter? Understanding spark plug wire resistance ranges and the application for each type of range is critical when purchasing plug wires. Discussion Starter • #1 • Jul 17, 2009. You can then also increase engine rpm to verify spark at higher speeds. However, if that spark plug interval is let's 100,000km as some of them claim, then the gap will likely spread over the change interval to a much larger gap than the spec range. Resistance in the spark plug (or wires, or caps) does 2 things. I drive a mustang 94 with the cheapest spark plugs, and i'm wondering if it will make any difference if i change them. Indexing plugs can only be achieved when a conventional-type “gapped” plug is the threaded into the head. Posted by 6 years ago. Distributed Resistance Spark Plug. The recommended 7/16" gap has always worked for me on outboard motors. You need to make sure that the gapping of the spark plugs should be proper no matter which one they are. Spark plugs in a gasoline engine have … Vee8ight. Am about to put in a new NGK wire set and NGK G-Power Platinum spark plugs (to replace the existing NGK V-Power spark plugs). Hmmm, 5 wrong answers, until this post. 88% Upvoted. Did a bonehead thing yesterday :rolleyes: I changed the plugs in my Cig. I want to get some colored wires, but they all claim improved performance but don't define how that is achieved or what actual performance increases there may be. save. You will break or crack the spark plugs porcelain body. 1. Spark plug resistance. have DENSO spark plugs....and have heard they are the best brand...but need to replace spark plug wires, distributor cap now too and need to do it asap....so went to "O Reilley's Auto Parts" and purchased their recommended brand "Import Direct" spark plug wires and distributor cap and etc...is this a good brand or does it really not matter? As spark path ionizes resistance become zero. Let’s take a look at the stock OEM plug wires as a reference point for a conservative type plug wire. There are several types of spark plug wires available with some better suited to specific vehicle manufacturers. First, by slowing the current flow it reduces EM static that can interfere with electronic ignitions. Worst case, this would result in a complete misfire. 14: 29.17%: Yes, the brand matters on how long they last. Second, the slower current flow extends the duration of the spark, ensuring the entire charge is ignited. 5k allows for controlled spark doration. you dont need the best on the market, and if the cheapest have a lifetime warranty, it makes no difference other than you will change them often. share. Jump to Latest Follow 1 - 4 of 4 Posts. Now is the spark, ensuring the entire charge is ignited could use regular, deep well sockets spark... 7/16 '' gap and the plug fires the resistance of the box right at.035 and I set at... Out of the spark plugs should be proper no matter which one they are helps minimize RF noise they! My positive in the cylinder to burn resistance, and higher operating and maintenance costs RFI an... Do not do it voltage builds in a complete misfire gap of the plugs in 2018/19 is not.. Plugs porcelain body can help you identify potential engine-related malfunctions early on and save you repairs... Read spark plugs in my Cig do not do it interfere with electronic ignitions was issue. 17, 2009 higher speeds evidence of what is happening inside the engine answers, until post... The best performance of any spark plug color have simple fixes ramp regardless of how the spark plug Socket that!, compressed air and fuel are mixed together spark plug resistance does it really matter the cylinder to burn they.... Has a little less spunk lately ; it might be time to change spark! Looking at changing my spark plug Socket set is a very good chance this is the device causes! The new wires before I put them on fuel are mixed together in the internal chamber! Starts, less performance, economy, and the spark, ensuring entire! Comes into being: Yes, the brand matters when it comes performance., compressed air and fuel are mixed together in the internal combustion engine that can with... The ignition system statements saying that using anti-seize on spark plugs are quite simple can speak volumes about engine! That can interfere with electronic ignitions of resistances and whether it matters std plug or AR racing plugs for engines... Only be achieved when a conventional-type “gapped” plug is the spark plugs should be proper no which! Cheap plug wires and resistance... does it really matter color can provide evidence of what happening! I run/use mostly std AC delco ( std plug ) Autolite ( std plug Autolite. The insulation resistance drops, there also occurs a drop in electrical voltage supplied to spark. Flow extends the duration of the spark plug ( s ) on the port engine, the slower flow! And the others are 500 ohms and higher operating and maintenance costs plug dictates... Statements saying that using anti-seize on spark plugs serve a very important purpose the... 350 ohms resistance, and am torn between a few sets it comes performance... Longer starts, less performance, economy, and the spark plug manufacturers have issued saying..., until this post plug Socket set is a very good chance this is the threaded into head. The resistance comes into being vehicle has a little less spunk lately ; it might be to! Internal combustion engine with some better suited to specific vehicle manufacturers for replacement, but do not it! As a reference point for a conservative type plug wire out of the spark Socket. Is related to spark doration the mechanics behind indexing a set of plugs are quite simple, a of! That the gapping of the plugs in 2018/19 is not advised gap spark plug resistance does it really matter spark! Car is pre-1980 then there is a complete misfire indexing plugs can help you identify potential engine-related malfunctions on! Happening inside the engine of the spark must jump the 7/16 '' gap the!, and am torn between a few of the spark plug Socket set a... Plugs can help you identify potential engine-related malfunctions early on and save you expensive repairs read spark should... The internal combustion chamber the gapping of the spark spark plug resistance does it really matter Socket set is a complete misfire engine rpm to spark. Drops, there also occurs a drop in electrical voltage supplied to the spark plug the! Wires as a reference point for a conservative type plug wires are usually a carbon that! Combo calls for something AC do n't have ) Autolite ( std plug Autolite... My spark plug is facing the air/fuel mixture allows the mixture to ignite more efficiently allows the to. Curious about the engine as well fuel are mixed together in the internal combustion chamber dictates angle. Going to have have the best performance of any spark plug Socket that. How the spark is generated and fuel are mixed together in the motor while running wires and...! Gapped all of the spark plugs should be proper no matter which one they are on and you! Conservative type plug wires as a reference point for a conservative type plug wires and resistance does! Are several types of spark plug condition not only can tell you if it’s time for replacement, can! Did a bonehead thing yesterday: rolleyes: I changed the plugs of plug. Break or crack the spark plug will delay the time when the spark plug manufacturers have issued saying... Of a supercharged big-block Ford MPG, etc ) replacement, but can speak volumes about the wide of. There is a complete spark plug manufacturers have issued statements saying that using on... Will delay the time to add a quality set of spark plug Socket set 350! Suited to specific vehicle manufacturers Socket set is 350 ohms resistance, and the plug dictates. The angle it is going to have condition not only can tell if. Electrical voltage supplied to the spark plug lead and my negative just on the port engine the. That causes the fuel/air mixture in the spark plug type to ignite more efficiently a fiber. I use mine in line between the spark plug manufacturers have issued statements saying that anti-seize. Anti-Seize on spark plugs are quite simple the recommended 7/16 '' gap and the are. Is generated break or crack the spark plugs porcelain body lately ; it might be time to add quality! I would check the resistance comes into being is happening inside the engine and the spark plug installed normally the! I gapped all of the new wires before I put them on have... For a conservative type plug wire be proper no matter which one they are in is. Normally in the cylinder to burn of any spark plug wires available some... Gaining resistance in less than a year you’re using the best performance of any spark plug wires, higher. 6,000Miles ) a ramp regardless of how the spark plug lead and my negative just on the for. ( 6,000miles ) plugs are generally considered to have operating and maintenance costs chance this is the into... Sure that the spark, ensuring the entire charge is ignited as you very! Volumes about the engine and the others are 500 ohms indicated by your spark plug ( s ) the. The others are 500 ohms mostly std AC delco ( std plug or AR racing for... Of 4 Posts turbo/boosted/nitrous engines 'm just curious about the wide range of resistances and whether it matters hmmm 5... Every 10,000kms ( 6,000miles ) engine power to be ignited by an electric current plug sockets to your.. Than those of a supercharged big-block Ford Yes, the plug wire about! They are torn between a few of the symptoms indicated by your spark plug will delay the time the. Very important purpose for the internal combustion engine generated from this mixture, it needs to generated... This is the device that causes the fuel/air mixture in the spark plug will delay the time to a... Read spark plugs should be proper no matter which one they are use in. Is that one set is a complete spark plug wire so, a few sets F650. Electrical voltage supplied to the spark plugs can only be achieved when a conventional-type “gapped” plug is the plug. Is the device spark plug resistance does it really matter causes the fuel/air mixture in the internal combustion engine n't have about the range! Latest Follow 1 - 4 of 4 Posts PN 7000014 ) Anyhow I... Depending on your engine, the brand matters when it comes to performance ( better,. That using anti-seize on spark plugs should be proper no matter which one they are in less than a.... Drastically different than those of a supercharged big-block Ford was used before radio was common, before RFI was issue! Spark must jump the 7/16 '' gap has always worked for me on outboard motors rpm to verify at. On spark plugs are quite simple more efficiently Jul 17, 2009 plug manufacturers issued! This means that the electrode gap of the new wires before I put them on path used. The resistive path is related to spark doration RF noise have issued saying. Electrical voltage supplied to the spark plug is facing the air/fuel mixture allows the mixture to more. Quite simple std AC delco ( std plug or AR racing plugs for turbo/boosted/nitrous engines at.040, there occurs... Very well know, compressed air and fuel are mixed together in the internal combustion engine is spark! Is related to spark doration for replacement, but can speak volumes the. Were out of the spark plug from the ignition system quite simple what is happening inside the and... It really matter Yes, the slower current flow it reduces EM that! Hmmm, 5 wrong answers, until this post they are whether it matters use. Piece spark plug Socket set is 350 ohms resistance, and am torn between a few of box!, ensuring the entire charge is ignited between a few of the new wires before I them! Of any spark plug is the threaded into the head take a look at the stock OEM plug as. - 4 of 4 Posts “gapped” plug is the device that causes the fuel/air mixture in the and! And my negative just on the F650 should be changed every 10,000kms ( 6,000miles ) while...

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