Porting manifolds...messed something up
08-24-04, 02:40 PM
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Porting manifolds...messed something up
Well, I just got done porting and polishing my intake manifolds on my s5. I got everything back together and started her up. She started, dropped to 1000 rpm's and died. So I took all of the manifolds back off to check for anything left disconnected, etc. I put everything back together as it should go and tried again. Same thing, she will start up with a loud *** backfire then die. WTF is going on?
Oh yea, I can keep it running if I keep revving it, but just barely.
Oh yea, I can keep it running if I keep revving it, but just barely.
08-24-04, 02:47 PM
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sounds like a vacuum leak, go buy a can of starting fluid and get a helper to start the car and keep it at a steady rpm and spray the fluid were you think the leak is, when the rpms change thats were the leak is
good luck
good luck
08-24-04, 03:00 PM
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mine acted similar to that after i ported and such, and then i reved it a few times and it coughed, etc then idled smoothly. I dont know what it was but its fine now
08-24-04, 03:19 PM
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Well, Ive tried turning it on and keeping it going like 10 times now and it didnt do anything different. Wouldnt a vaccuum leak have to be a lot more than just a little vaccuum hose to keep the car from even running?
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08-24-04, 04:19 PM
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HMMM, the tps. That could be it. Would it be messed up if I took the throttle cable off? How can I check it if I cant keep the car running?
Last edited by Crush; 08-24-04 at 04:25 PM.
08-24-04, 08:25 PM
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ive took my cable of numberous timed, tightened it, loosened it etc etc and ive never readjusted it and it works 100% still and is accurate, so i dont know..
08-24-04, 08:30 PM
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Originally Posted by Crush
HMMM, the tps. That could be it. Would it be messed up if I took the throttle cable off? How can I check it if I cant keep the car running?
http://fc3spro.com/TECH/HOWTO/TPS/tps.html
08-24-04, 09:17 PM
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it could also be the pressure sensor.. mine did the same thing when i forgot to hook mine up.. or the idle hose from TB to the inlet pipe??
you checked these too?
you checked these too?
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