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have a 99 lq4 iron head installed a wet kit on it and i just wanna make sure im not running it to lean and was wondering what other folks were running for jetting size...
currently running
60psi fuel pressure with a .042 fuel jet
900-950 bottle pressure with a .061 nitrous jet
truck hits pretty hard and runs good just worried about being lean.... having a hard time reading the plugs.
That is lean!! You need to add some fuel to it. Also it's a little hard to gauge where the timing mark is...
-Chris
Yeah were checking solenoids now hopefully we find a problem. Fuel pressure isnt changing but maybe 5 psi so were thinking a bad solenoid.... Ill have more pics up later if we can find a solenoid or another problem.
So we found the solenoid was weak we installed a fuel pressure gauge between the fuel rail and solenoid it got 52-60 psi.... Installed the fuel gauge after the solenoid only getting 10 psi from solenoid to fogger BOOM! So we installed new jets as if we were running 10 psi and for 150 shot which the jets were something like .061 nos ad. .051 fuel. The next hit was a huge difference you could just hear it screaming! And also got some tan on the plugs!!! So going to get new solenoids today and re run everything back to the way i haf it.
A weak noid will definitely cause some problems in more way than one. I'm glad you were able to find the issue and are getting is resolved.
Depending on the option for the fogger you should be able to spray anywhere from 400-500hp easily.
-Chris
Sweet! Thanks for the reply! I got picked up new cheater solenoid so im gonna go threw the process of checking pressures again the make apass then report back
Thanks again!
I know pictures are awesome and help other people solve there issues!
Heres how i did it. I took my purge adapter (silver adapter in pic) hooked it up BEFORE AND AFTER solenoid to get a proper fuel reading for each side. Installed my fuel pressure gauge to that adapter log and watched each side of the solenoid for pressure. BOOM she worked great gets 54psi on fuel delivery side of the solenoid and 46psi on the out side. Just knowing the differce on each side will help with proper jetting.
Ill be making a test pass in a bit and post pics of plugs with the new solenoid.
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Jetting and spark plug reading help! 
