jbarnett31 Posted October 30, 2009 Share Posted October 30, 2009 I have an 06 model sick-o with 113000 miles. It cranks up and runs rough after a minute the cylinders will start dropping out one at a time until it dies. When i try to crank it back it hits like it wants to start sometime and other times it hydro locks. It is blowing white smoke out the tail pipe and leaking coolant from the exhaust connector under the passenger seat. I was gonna replace the egr cooler but when i removed the egr valve it was not overly corroded and the inside of the intake did not look wet, so if the egr cooler was leaking bad enough to lock the engine wouldnt it be wet at the egr valve. I dont have as much experiance as all of you so any help would be appriciated. Thanks. Quote Link to comment Share on other sites More sharing options...
joshbuys Posted October 30, 2009 Share Posted October 30, 2009 Sounds like a classic egr cooler 'cept for the lack of wet intake. Pull a vacuum on the cooling system - if it leaks off, you've got a cooler blown. Make sure you do the oil cooler at the same time. Quote Link to comment Share on other sites More sharing options...
Aaron Posted October 30, 2009 Share Posted October 30, 2009 I have done a couple where the cooler is pissing coolant out into the exhaust, but the valve and intake have been dry. Fill the cooling system, jack the ass end of the truck WAY up in the air, pull the EGR valve out, and pressurize the cooling system. Look down in there and see if there's water pooling in the intake. Perhaps it's leaking at the back of the cooler, which is causing it to just run into the exhaust as opposed to the intake. You could also try separating the exhaust at the manifold on the RH side, not much, just enough to allow liquid out, and try and determine which way it's flowing. I know that's not the most practical of ideas, but I'm also in the camp of you've got a blown cooler. Also the oil cooler (or heat exchanger) and the screen underneath (6a642 and 6c683) should always be replaced during the course of this repair. Quote Link to comment Share on other sites More sharing options...
Mikill Posted October 31, 2009 Share Posted October 31, 2009 If not the cooler then maybe a overfueling injector. I have had some that come in with injectors with blown out tips and have had some where the injector hold down loose that lock up the engine. Quote Link to comment Share on other sites More sharing options...
cbriggs Posted November 3, 2009 Share Posted November 3, 2009 Second for an injector, dumps enough fuel to starve one side of fuel then dies. When keyed back on that injector dumps fuel in the cylinder. I had an 06 with half the injector tip missing do this. Required an engine as the piece of tip ate the piston, head and cylinder wall, as well as the turbine wheel as it exited the engine. Quote Link to comment Share on other sites More sharing options...
GregKneupper Posted November 3, 2009 Share Posted November 3, 2009 Also have replaced a few injector for this as well. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.