I've looked all over for answers on why my 1990 Lego won't start after I took and and then reinstalled the fuel injectors. The reinstall went great with the exception of a screw breaking on one of the pieces that go over the injectors to hold it down. The part of the screw is still stuck in one end and I cannot put another screw in to seal it completely. Is the my problem. When I turn the car on it sounds like the engine is siezed. I'm super worried, can anyone help?

In what way does it sound like it is seized?   Does the engine turn at all?  Does it turn until one of the pistons comes on on compression stroke (indicating hydrolock)?  Does it turn over ok if you pull the spark plugs?

Its hard to describe. I turn the key and it makes a clunking noise and when I hold the key, nothing. Occasionally if I hold the key It will make a whinin sound and then another clunk noise a few seconds later. I will pull the spark plugs right now and let you know what happens.

Just pulled cylinder 2. There appears to be a small bit of gas in the chamber.....ummmmm?

Gas in cylinder 4 as well.

No gas 3, but gas in 1. Turned it over and gas came shooting out of the chambers. Shot like 5 ft from my car. Lol when I turned it over it made the sound it should.

I keep turning it over and gas keeps shooting out of the chambers.

Engine now turns over, but will not start.

Is there a reason why there should be a fuel leak into that cylinder?  Was this the one with the screw problem?  Did you replace the injectors?  Could that one be leaking into the intake?  Could fuel be leaking into the other cylinders, but didn't get a chance to lock the cylinder?

Edited June 1, 201312 yr by NorthWet

The Screw problem is on cylinder 3. Chamber 3 just so happens to be the only one not full of gas. There are not gas leaks. I've done a full check. The engine now turns over, it just doesn't start. Perhaps it's flooded and I should let it sit for a bit?

The plugs could be fuel wetted. 

 

How did you turn the engine over, from the ignition switch?  If so, did you disable the ignitor or coil-pack first?

I turned the engine over with the ignition. I didn't disable anything. I took the plugs out, turned the engine over until no more gas came shooting out, put the plugs back In, and now it won't start, it just turns over. The plugs were pretty covered in gas so maybe that is the problem, didn't even think of that. I have the wires pulled from the plugs to let the excess gas evaporate off them. I'll try again in a few minutes unless you think I should do something else.

Sometimes, electronic ignition systems get really upset if you disconnect the spark plugs and still run the ignition;  they can be damaged this way. 

How do I disconnect it?

Ahhh got it

Should be at least 3 ways:  Disconnect the ignitor, disconnect the coil-packs, or pull the ECU fuse.

Alright. Disconnected the coil pack, pulled the plugs and wires. Wiped clean, set out to dry..will try again in half an hour to see what happens.

And and cranked the ignitiOn a few times to make sure all gas is out.

Just started the engine. Idles for a few seconds and dies. Gas is spraying out of the exhaust pipe.

Sounds like you tore the lower o-ring on one/more injectors; especially if you re-used the old o-rings, sometimes they swell a bit and don't go back in.  This will allow fuel to dump into the intake and cylinders.  I always put a bit of lube on the o-rings before installing them.

 

If it were me I'd fix that broken screw, but it should seal fine with just one.

I just looked under my car. There is a perfectly good O-ring just chillin under my car.......

I put the O ring back. It still will start up and die out a few seconds later. Do I need to let it sit a while to let all the gas work it's way out?

Did you check all the o-rings?

 

If just one cylinder is fouled it will still idle, just lumpy.  It should only take a minute or so for it to clear up, if the problem is indeed fixed.

It was cylinder 4. I start it up, it it will idle for 3-5 seconds and then die. If I give it gas, it dies. That's what's leading me to think its just flooded really bad.

Replaced spark plugs. Still nothing