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Re: Test Results.... Posted by SWEDECAR [Email] ![]() ![]() ![]() In Reply to: Test Results...., Robert, Sun, 12 Dec 2004 14:27:49 Members do not see ads below this line. - Help Keep This Site Online - Signup |
Engine seems to be running too lean.
You have too much Oxygen left in the exhaust on the low speed test which means the car gets the air in but not enough fuel to use up all Oxygen.
In a perfect scenario, almost all the oxygen should be depleted when it reaches the tail pipe, that means the combustion has been perfect.
The low CO values also indicate a lean condition at idle.
It could be vacuum leaks at intake, bad air massmeter or maybe a leak in exhaust system drawing fresh air in.
Click on the link below for more reading about exhaust gasses and their interaction with each other.
Anders
posted by 24.127.89...
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