Reassembled upper manifold , fuel rails, etc.. won't start
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Prosthetic head.
Joined: Apr 2003
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From: Pennsylvania
Reassembled upper manifold , fuel rails, etc.. won't start
88 GTU: I had coolant leaking out of the hose going from the intake manifold to the engine. I took everything off, and replaced the hose. During reassembly, I broke one of the injectors, so I swapped both intake fuel injectors with some from my wrecked car, another 88 GTU and finished reassembly.
When I turn the ignition, the car starts, revs to about 4000 rpm, and promptly shuts off. If I give it gas, it just backfires through the tailpipe.
It would seem that my air/fuel ratio has been messed up, but I reassembled everything exactly... the air flow sensor, the throttle sensor... but I'm thinking that this must be an electrical problem.
Any advice?
When I turn the ignition, the car starts, revs to about 4000 rpm, and promptly shuts off. If I give it gas, it just backfires through the tailpipe.
It would seem that my air/fuel ratio has been messed up, but I reassembled everything exactly... the air flow sensor, the throttle sensor... but I'm thinking that this must be an electrical problem.
Any advice?
Thread Starter
Prosthetic head.
Joined: Apr 2003
Posts: 1,079
Likes: 0
From: Pennsylvania
the numbers on the injectors match the ones they replaced.
By the way, is there a difference between the bottom fuel injectors and the top ones that go into the intake manifold?
To my relief at the time, I did find a loose vacuum line, which I secured... but there was no change in my attempts to start.
Like I said, I can keep it going for a VERY short time by pumping the gas, but the afterburn happens again and again. I tried turning it over a few times with the FI disconnected in case of flooding, but that wasn't it either.
Normally I would assume that it's a problem with the information comming to/ from the ECU, but the car worked just fine beforehand.
By the way, is there a difference between the bottom fuel injectors and the top ones that go into the intake manifold?
To my relief at the time, I did find a loose vacuum line, which I secured... but there was no change in my attempts to start.
Like I said, I can keep it going for a VERY short time by pumping the gas, but the afterburn happens again and again. I tried turning it over a few times with the FI disconnected in case of flooding, but that wasn't it either.
Normally I would assume that it's a problem with the information comming to/ from the ECU, but the car worked just fine beforehand.
Last edited by excitingleopard; Jan 22, 2006 at 04:19 PM.
Double-check the connector on your AFM. Maybe you didn't reconnect it firmly when you did the reassembly? That's exactly how mine reacted when I left it unconnected during a reassembly.
Thread Starter
Prosthetic head.
Joined: Apr 2003
Posts: 1,079
Likes: 0
From: Pennsylvania
I wish it were that easy, but I never disconnected the afm. I've forgotten to do that before too, and the symptoms in this case are more severe than an AFM problem.
I'm pretty sure I accidentally put in a set of primary injectors in place of the secondaries. Now the trick is actually finding the secondaries. I seem to have lost them.
I'm pretty sure I accidentally put in a set of primary injectors in place of the secondaries. Now the trick is actually finding the secondaries. I seem to have lost them.
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