Originally Posted by Falcon_LS
Originally Posted by tookien
hey thanks for the response. I will check those hoses.
I have never had a P0014 code.
I will try Penzoil next time, apparently it has a lower NOACK.
I still may have a blown head gasket, I will get around to performing a leakage test on the coolant as well as compression test of the cylinders this week.
so far the only thing suspicious is I smell gasoline on the oil - which could dilute the oil and I assume increase oil consumption.
I also checked that PCV hose and it's dry.
Definitely check that hose on the driver's side going from the block to the intake manifold. I am a little skeptical of a blown headgasket, but it's worth crossing off your list. The headgasket on this engine has a small oriface for the PCV system, which can be blocked by excessively dirty oil.
The 4.2L came with Delphi Multec-II injectors. The early variants of these were known to leak, and I had a '97 Suburban with the Vortec 7400 that was notorious for this. Trav was able to help me out, and I got a set of updated 21 lb injectors for it. While the Multec-II's are better, the lack of a fuel filter starting MY2004 does not do them any good.
I cannot speak for Canada, but over here, despite the fact that I run Euro V gasoline (equivilant to U.S. Tier III), I start having injector problems around the 50,000 km mark. I guess stations around here are not so good at cleaning their tanks. Symptoms include:
- Misfire on cold starts until the engine reaches operating temperature
- Engine vibrations in gear
- Engine lacks power until it hits 3,000 rpm
- Fuel dilution
If you have any of these symptoms, I know you mentioned fuel dilution, you might want to take a close look at your injectors.
Pulling the injectors off on this application requires removal of the intake manifold. I have two sets of injectors for each car I own, and my tune up consists of installing the set of cleaned injectors, spark plugs, igntion coil boots, intake manifold/throttle body gaskets and oxygen sensors. Takes about 2-3 hours to get through, since the battery tray, etc. has to come off for easier access.
seriously thanks a bunch for all that info.
will get back on the results.