EXAMINE my plugs please!
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EXAMINE my plugs please!
These are from a GS-R powered del Sol that I just installed a DRAG 3 kit on. The kits 100% stock, motors 100% stock. Fuel system consists of a Jackson Racing intank fuel pump (he was previously supercharged), DRAG in-line pump inbetween fuel filter and rail, and RC310 injectors... with a Vortech 8:1 FMU and AEM adjustable regulator. Base timings at about 13 degrees. The plugs shown have about 10 minutes of driving on them, with a few WOT runs. The car was very hesitant at certain points, like a bad "sputtering", and then when the boost would build... it would rocket off for a bit, losing traction throughout the top of second gear at a mere .45 bar.
From what I know, these plugs look like the motors VERY lean, but I do not see how. Could it be a conflict between the two fuel pumps? ANY helps appreciated. Does the polarity on the in-line make a difference in fuel flow? The car idles fine etc... but like I said... has a bad stutter, and the plugs look like this:
EDIT: My friend just brought up an interesting point. The fuel pressure reads 45psi vacuum ON, and that gauge is BEFORE the inline pump!
[Modified by HybridKOOP, 7:46 AM 7/31/2002]
From what I know, these plugs look like the motors VERY lean, but I do not see how. Could it be a conflict between the two fuel pumps? ANY helps appreciated. Does the polarity on the in-line make a difference in fuel flow? The car idles fine etc... but like I said... has a bad stutter, and the plugs look like this:
EDIT: My friend just brought up an interesting point. The fuel pressure reads 45psi vacuum ON, and that gauge is BEFORE the inline pump!
[Modified by HybridKOOP, 7:46 AM 7/31/2002]
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Re: EXAMINE my plugs please! (supergreenSol)
Stock gap. Also... when the cars off etc.... and I just activate the inline pump, I can feel gas returning to the tank from the rail... so gas IS being pumped the right way that I know of...
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Re: EXAMINE my plugs please! (HybridKOOP)
My guess would be a clog in the fuel line, had a similar problem in my old car, but you say it sounds like its flowing fine,sorry I couldn't be more help.
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Re: EXAMINE my plugs please! (CDooMe2)
check all your vac lines too, make sure the fmu is properly installed
I just really don't understand how 2 fuel pumps, a FMU, and 310cc injectors could run lean at 7psi.
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#8
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Re: EXAMINE my plugs please! (HybridKOOP)
here is a thread i started about plugs 6 weeks ago ... very useful info : https://honda-tech.com/zerothread?id=212116
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Re: EXAMINE my plugs please! (Trigun)
here is a thread i started about plugs 6 weeks ago ... very useful info : https://honda-tech.com/zerothread?id=212116
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