Forscan data
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Cross-Country
Joined: Dec 2022
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thats 1838 rpm and no problems starting out on highway runs great atleast i think it does it is just runs rough at a stop light and idle and also surges.
Lead Driver
Joined: Apr 2016
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From: Bahstun
What is fuel pressure when cranking and when running and when at WOT in 3rd?
If any air is in fuel or oil system it can take 100 miles to get it out if you have worked on it.
IPR% at idle and at WOT run charted is more helpful. Also include inj pulse width and ICP pressures
If any air is in fuel or oil system it can take 100 miles to get it out if you have worked on it.
IPR% at idle and at WOT run charted is more helpful. Also include inj pulse width and ICP pressures
Thread Starter
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Cross-Country
Joined: Dec 2022
Posts: 90
Likes: 11
What is fuel pressure when cranking and when running and when at WOT in 3rd?
If any air is in fuel or oil system it can take 100 miles to get it out if you have worked on it.
IPR% at idle and at WOT run charted is more helpful. Also include inj pulse width and ICP pressures
If any air is in fuel or oil system it can take 100 miles to get it out if you have worked on it.
IPR% at idle and at WOT run charted is more helpful. Also include inj pulse width and ICP pressures
Thread Starter
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Cross-Country
Joined: Dec 2022
Posts: 90
Likes: 11
just did something similar i got 42 psi at idle and 47 psi at 3000 rpm fuel pressure
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Lead Driver
Joined: Apr 2016
Posts: 7,182
Likes: 1,336
From: Bahstun
Thats looking good for pressure
rough idle can be a few things
weak cylinder
no sealing valve
weak lifter not pumping up
IPR can stick
bad IDM
bad inj harness
inj orings worn
worn injectors
rough idle can be a few things
weak cylinder
no sealing valve
weak lifter not pumping up
IPR can stick
bad IDM
bad inj harness
inj orings worn
worn injectors
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Cross-Country
Joined: Dec 2022
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Been calibrating guage and my new chinese liguid filled guage is 10 psi off so my pressures are 10 psi higher hooking up to forscan all the tests it will let me do it has passed except park brake switch and # 4 cyl on contribution test about a month ago i had #4 and #5 on contribution test but used diesel kleen i think might have helped with it dropping to 7% on ipr i am leaning towards that being bad does that sound about right?
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Cross-Country
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i have never used the phone app so i coulnt tell you i know on my laptop there are things that dont work
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