Quote:
Originally Posted by apwcu
I don't know how you came up with the assumption that I ignored everything everyone said, I intend to do a compression test but was checking all other easier options first and wanted all the information I could gather. I just replaced the injectors with rebuilt ones and need to order new heat shields and an adapter to test compression. I have records of a compression test very recently before I bought it with perfect results, it didn't have these symptoms and it just started one day and slowly progressed to what it is now. It has zero blow by which I would expect to see with a cylinder losing enough compression to cause an issue like this.
I will do a compression test again soon and report back, I know things can happen at anytime and I can't rule it out.
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If replacing the injectors didn't change the running behavior, it's probably safe to say you can rule them out as the source of your problems.
Blowby is caused by combustion gas leaking past the rings. Compression loss through valve problems is far more common. If you have worn valves or worn valve stems, you have have enough slop to leak enough compression to cause running problems. Compression loss via valves failing to seal would not cause blowby. White smoke is unburnt fuel. The missing out with the white puffing suggests that fuel is being injected but not burnt.
A compression test will tell you if you have compression problems. A leakdown test will tell you how severe it is and where the leak is occurring (listen for the air leaking out).