Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
Hello SD or anyone. My name is Ed, Any info will be greatly appreciated.
I just got done watching SD's video on the 04 suburban with the lean codes that was an intake leak.
I have the same issue- rough idle at start, both banks are lean codes in my 02 suburban 5.3.
But the suv runs great once warm once the codes actually cleared but returned the next day for both banks being lean.
My question is I have also been having a small amount of coolant disappear from the overflow bottle. But I have no idea where?!
I do know about the issue with some of the heads cracking, I have not removed the valve to see if my heads have that casting.
My question is could the leak of coolant be leaking into the manifold? Or is that not possible?
Thank you so much SD or anyone's time and knowledge! I great appreciate it!
Have a great day
Its possible. I would pressurize the cooling system and check for external leaks. If you can't find any external ones remove the valve covers and look for the Castech markings or signs of leaking there. Here is the bulletin for the head problem.
gav09 wrote: Its possible. I would pressurize the cooling system and check for external leaks. If you can't find any external ones remove the valve covers and look for the Castech markings or signs of leaking there. Here is the bulletin for the head problem.
