importwarrior Posted June 17, 2014 Report Share Posted June 17, 2014 (edited) well i have a miss at idle and cruise. good step on the gas and it runs fine. changed plugs, gapped to 28new NGK wires41 PSI fuel pressureno air leaks i can see or hear or can find. i want to do a compression test to see results.i cant do a leak down test. no tools for that. any other suggestions would be great. i have tried many things for this problem andcannot figure it out for the life of me. it is killingme. i need a smooth running car. Edited June 17, 2014 by importwarrior Link to comment Share on other sites More sharing options...
importwarrior Posted June 17, 2014 Author Report Share Posted June 17, 2014 (edited) previous post http://www.starquest...howtopic=141934 video i found that is similar to my problem.mine seems to go rich when it sputters. Edited June 17, 2014 by importwarrior Link to comment Share on other sites More sharing options...
importwarrior Posted June 21, 2014 Author Report Share Posted June 21, 2014 (edited) well i figured out half of my problem. the miss is due to the center brush on the cap not making contact to the rotor.the spring under the brush was weak and the brush was flush and did not protrudeout at all. the spark was arcing. i replaced the cap and spark miss is gone.in the pic below you can see the center brush sticking out a bit. I know this is nota starquest cap but you can see the brush sticking out.now to fix my fuel issue. http://www.autopartsfair.com/images/products/engineparts/f201043774yec.jpg Edited June 21, 2014 by importwarrior Link to comment Share on other sites More sharing options...
TSIREX Posted September 16, 2014 Report Share Posted September 16, 2014 I got a similar problem but it goes lean for a split second at idle and cruise. Goes away after unplugging oxygen sensor. At idle it will go from 12.8 to 16 on afr gauge. Returning oxygen sensor to see if it does better Link to comment Share on other sites More sharing options...
StarquestRescue Posted September 16, 2014 Report Share Posted September 16, 2014 Cap and rotor is the first thing i replace in the ignition system. I have seen them degrade in less then 5k miles. The car in the video sounds like it has a secondary air filter problem or bad check valve. Is this the car with the smoking problem? Link to comment Share on other sites More sharing options...
TSIREX Posted September 18, 2014 Report Share Posted September 18, 2014 Will it hurt the engine if you temporarily run the engine without the check valve and drive it to see if it clears up? Link to comment Share on other sites More sharing options...
doomviillain Posted October 11, 2014 Report Share Posted October 11, 2014 Im having misfire issues pretty bad at idle. According to my afr gauge it seems to be a lean misfire, each time it misses it goes full lean then to 13-16...its kind of jumping all over the place. I recently upgraded my injectors from Fuel Injector Clinic 650/1150cc, could not having an adjustable FPR and raising the base fuel pressure cause this issue? I have an apexi safcII and I have to set the low throttle @ 800rpm to +30 just to get it to idle, but it idles like crap. Normal cruising is ok, I haven't went WOT since I'm still breaking in the motor. And I get alot of popping from the exhaust during deceleration. Link to comment Share on other sites More sharing options...
importwarrior Posted October 11, 2014 Author Report Share Posted October 11, 2014 first check all plugs and wires. when I had this problem I pulled one spark plug wire off at a tie while the car was running. the misfire didn't seem to change much or at all. I changed the cap and found my problem. my fuel problem is my head gasket. I either cracked my head or bad gasket.still looking in to it. Check all your vacuum lines. Link to comment Share on other sites More sharing options...
doomviillain Posted October 11, 2014 Report Share Posted October 11, 2014 (edited) I bought the car as a shell and didn't come with much, I picked up a motor and got it rebuilt, so just about everything around it is new, vacuum hoses, coolant hoses, spark plugs, cap n rotor, ngk wires, fuel injector clips, fuel filter etc. Only 26 miles on the motor. I'll look into trying a different cap. I still think it needs an adjustable FPR, just need someone to confirm, if they had a similar issue related to mine Edited October 11, 2014 by doomviillain Link to comment Share on other sites More sharing options...
importwarrior Posted October 11, 2014 Author Report Share Posted October 11, 2014 I have a adjustable set at 41 ps . Didn't make a difference for me. If you figure this out please post your findings Link to comment Share on other sites More sharing options...
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