Injector problem

[tRustyK5]

I have a little problem with my '83. It wouldn't start this afternoon, acted like it was hydro-locked. Batt's and starter are good and after letting it sit for 5 minutes I had my wife crank it while I watched. I saw the engine slowly creep over as she hit the key...then spun normally and started. Got some nice blueish/black smoke from that tailpipe.

Yesterday I fired it up and got a good amount of smoke from the passenger pipe...something it's never done before.

My theory is I have an injector that is leaking fuel into the motor, has anyone had this happen? I have some spare injectors, but have no way of narrowing it down to one specific injector. If my theory is BS I don't really want to swap 4 injectors for nothing.

I did check the coolant level and it's right up where it's been since I did the heater core 6 weeks or so ago. That and the black smoke at start up says raw fuel to me.

Rene

 

[imiceman44]

I have a little problem with my '83. It wouldn't start this afternoon, acted like it was hydro-locked. Batt's and starter are good and after letting it sit for 5 minutes I had my wife crank it while I watched. I saw the engine slowly creep over as she hit the key...then spun normally and started. Got some nice blueish/black smoke from that tailpipe.

Yesterday I fired it up and got a good amount of smoke from the passenger pipe...something it's never done before.

My theory is I have an injector that is leaking fuel into the motor, has anyone had this happen? I have some spare injectors, but have no way of narrowing it down to one specific injector. If my theory is BS I don't really want to swap 4 injectors for nothing.

I did check the coolant level and it's right up where it's been since I did the heater core 6 weeks or so ago. That and the black smoke at start up says raw fuel to me.

Rene

I don't know, black smoke is usually raw fuel in a hot chamber, raw fuel when cold is white.
I am having black smoke in mine and it won't start, still haven't figured it out but one comment was possibly bacteria or fungus in the fuel

 

[tRustyK5]

Well, when cold it was whitish smoke and plenty of it from the passenger pipe. When it did the "hydrolock" thing it was operating temp, and I got some black smoke...

Also, when I started it cold I got a small puddle of fuel that came out of a hole in the passenger muffler.

I'm sure it has to be one injector dripping fuel after shut-down. I'm thinking of pulling the GP's from the passenger bank of the engine, pulling the pink wire off, and having my wife hit the starter and see what I can see. If my theory is correct I should get a spurt of fuel out of one of the GP holes.

Rene

 

[imiceman44]

Well, when cold it was whitish smoke and plenty of it from the passenger pipe. When it did the "hydrolock" thing it was operating temp, and I got some black smoke...

Also, when I started it cold I got a small puddle of fuel that came out of a hole in the passenger muffler.

I'm sure it has to be one injector dripping fuel after shut-down. I'm thinking of pulling the GP's from the passenger bank of the engine, pulling the pink wire off, and having my wife hit the starter and see what I can see. If my theory is correct I should get a spurt of fuel out of one of the GP holes.

Rene

I say that would be a good way.
I guess I didn't read your post very well, I thought you said black smoke when cold

 

[tRustyK5]

Well, this evening I replaced all 4 injectors on the passenger side. After replacing the front two I fired it up, waited for it to warm up a little and the smoke wasn't there. I revved it a few times and the smoke started up again.

So, I then replaced the back two injectors and let me tell you they are a royal pain in the arse to get to because of the AC. I had to remove the sound deadening cover from the AC to get number 4 swapped.

I fired it up after changing number three...same smoke after revving it a few times.

I figured number four would turn out to be the culprit but after getting that one swapped out...same friggin smoke.

The smoke looks grey/blue and doesn't smell like coolant or anything, but at this point I'm really thinking head gasket.

Rene