91Q....Not Quite Right

Post by **timatt** » Thu Oct 07, 2004 3:54 am

91Q; plenum job 5 days ago, with new hoses, knock sensors/harness and injectors. Car is now hard to start. This occurs both cold and hot. I have to use full throttle to get it to start, but after starting, it runs smooth and strong, but with a slightly low idle (I posted about that yesterday). The car did not do this before the plenum work.

Ideas? Advice?

Post by **azskygod** » Thu Oct 07, 2004 5:29 am

Two things come to mind. Either a vacuum leak or an injector leakdown problem. When I did my plenum, I missed the vacuum hose underneath the TB. Listen carefully for a constant hiss at idle. An injector leakdown problem may show up as excessive black exhaust smoke at startup. Good luck.

AZSKYGOD

Post by **timatt** » Thu Oct 07, 2004 11:55 am

AZSKYGOD:

I've looked for a puff of smoke on startup, but I haven't seen one. Tonight I test the fuel pressure leakdown. I hope that freakin plenum doesn't have to come back off!

Post by **timatt** » Thu Oct 07, 2004 3:18 pm

See 91Q Low Idle for related post/info

91Q....Not Quite Right

91Q....Not Quite Right

Re: 91Q....Not Quite Right (timatt)

Re: 91Q....Not Quite Right (azskygod)

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