My Turbo wagon started running rough on the way home from work the other night. Lacking power and surging a bit.

When I got to the house I asked my son to listen for any spark jumping off the plugs/wires and he said that the #4 was leaking just a hair to one of the brackets near it. Also the Turbo was glowing a bit. I had not been pushing it enough for the turbo to be running.

My thoughts are that it is running a bit lean on a least one cyl. Probably the #4. I took my other turbo wagon to town yesterday and did pick up some brake cleaner to test for vacuum leaks.

Am thinking that I might have an injector buggering up on me.

I do have a stethoscope and will try to listen to all the injectors today after testing for leaks.

Car has 240k on it and around 85k since I did the head gaskets to get it up and running when I got it.

Standard trans and 4x4 also.

No check engine light showing and I do know the bulb is good as it does come on when I turn the key on.

 

Any thing else you guys think I might be missing?

 

Hush

Does the car run better cold than it does warm? If so, suspect the engine temp sensor located near the tubo on the back of the intake.

 

cylinder #4 is going to be the front one on the driver side.

No it doesn't run better cold.

I did change out the CTS and cleaned all the wiring for it about 2 months ago.

And #4 cyl is the back one on the drivers side.

Hush

Sprayed brake cleaner on all the hoses and intake and throttle body connections, no change at all.

Pulled the plug wires on all the plugs, while running.

#1, #2 and #4 all caused major rpm drop.

#3 only caused a small rpm drop.

Held the wire near the intake and got plenty of good spark off of it.

I also notice that I seem to be getting more rocker noise than I normally do.

Oil pressure is right on the money for where It has always been.

 

Have to run one of the boys home, will pull the #2 plug when i get back.

 

Hush

Edited January 10, 201115 yr by hush777
wrong cyl #

When was the last time you did the t-belts?

Almost sounds like one side is off.

And/or something is dumping excess fuel and its getting into the turbo.

7-9-2007 that would be about 40k miles ago

Will check that.

Pulled the plugs on the pass side and the #1 looks normal.

The #3 looks like it is running rich.

 

Will look at the T-belts and do a compression check

 

Hush

Anytime you get a glowing turbo, downpipe or cat, it's because you're running too rich and dumping raw fuel into that component. Suspect that #3 injector....

Yeah that is what I thought.

Timing belt on that side is dead on, and compression is at 130+ on both cyl's.

 

So now I need to pull the injector and look at it.

Glad it is on the pass side, cause I can't even see the injectors on the drivers side.

 

Hush

Pull 2 injectors while you are at it.

Reverse thier positions and see if the problem moves.

After some hunting (read: digging through 3' of snow in several places) I found my extra complete turbo manifold, with all the injectors. :)

So gonna swap a couple out and see what happens.

 

Hush

Success or so I am gonna call it.

Swapped out 2 injectors but one was bad, Guess which cyl the bad one went on...... #3 :banghead: ...... but changed it back to the know good one from #1 cyl and all is well .... Had to change out the connectors also as the injectors didn't like the ones on the engine, but like the ones that they had originally just fine.

Thanks all for the help and suggestions.

 

Hush