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Still running Lean... Posted by Goblin [Email]  (#2224) [Profile/Gallery]
(more from Goblin) on Tue, 8 Dec 2020 14:59:02
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So I posted a couple of weeks ago a really long post about all the things that I had looked at trying to figure this out. At idle I have perfect air fuel ratio. Underboost I start running around 15 to 16 on the air fuel ratio gauge. So I put a new air fuel ratio gauge O2 sensor in today. Still no change. So if it's underboost that I'm going lean it definitely has to be an injector right. Another words lack of fuel. I've changed the injectors around multiple times with different ones that I have here. That makes no change. I've tested the fuel pressure underboost with a gauge. I have great fuel pressure at the rail. I've sprayed all of the connection points of the intercooler the whole entire motor with carburetor cleaner trying to find an air leak it certainly isn't showing any signs of a vacuum leak. What's crazy is I have a knock sensor light hooked up and I'm still boosting 16 lb and the knock sensor light does not come on the motor pulls strong. It's spinning the tires in third it feels like nothing is wrong but those numbers on the air fuel ratio gauge I don't think lie ,do they? The exhaust is all stainless steel TIG welded. I don't hear any vacuum leaks it's all v banded together I've tightened the v-bands I have a lift so I can listen to the car up on the lift I hear no exhaust leaks by the O2 sensor for the air fuel ratio gauge.I even welded in a new bong for the stock O2 sensor location thinking maybe something was wrong there that did not change anything. I've had the whole entire system apart multiple times checked all of the piping all of the rubber, everything, I cannot find a leak anywhere. That's why I think I have lack of fuel somehow someway. Any ideas. Thanks. By the way this has a split second computer that runs the fuel and the timing the distributor is locked at 25°.this has been the way the engine has been set up for the last 9,000 miles with no problems until I let it sit for a couple of years and didn't really drive it all that much and now I have this problem. Brad is the one that set the whole car up and it also has water injection on it. Brad said the computer will not change so it should not be a software issue but I'm not sure I'm just at a loss.
, Tue, 8 Dec 2020 14:59:02 <-- Viewing This Message
, Thu, 10 Dec 2020 16:36:08, Thu, 10 Dec 2020 17:07:32, Thu, 10 Dec 2020 17:30:36, Thu, 10 Dec 2020 19:12:32, Thu, 10 Dec 2020 19:10:47, Thu, 10 Dec 2020 17:25:21, Wed, 9 Dec 2020 05:43:32
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