Trying to help a friend
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Senior User
Joined: Nov 2007
Posts: 305
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From: Inverness Fl
Trying to help a friend
hey guys, i am trying to help out a friend of mine, he says his fuel mileage went down the drain and it does not leak, injector o-rings? i hooked up my matco determinator scanner and it did not show any codes, but i checked the cylinder rotational values and at idle 1 and 2 were at about 1.3% 3-7 were at 0% and 8 was at about 5.1% i am still new to diesels and i am not sure what this means, any help would be appreciated.
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
Number 8 tends to have a higher value due to it's placement in the fuel / oil rail & the firing order.
For mileage issues, start with the basics. Clean fresh oil in the engine. Fuel and air filter in good shape. Then check for boost leaks. Check the 6 boots on the intercooler plumbing (big aluminum tubes under the hood), and check the up pipes for leaks (come off exhaust manifolds and connect behind the turbo).
For mileage issues, start with the basics. Clean fresh oil in the engine. Fuel and air filter in good shape. Then check for boost leaks. Check the 6 boots on the intercooler plumbing (big aluminum tubes under the hood), and check the up pipes for leaks (come off exhaust manifolds and connect behind the turbo).
