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Rpm issue ideas.... I'm lost....

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Old 08-10-2016 | 04:30 AM
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I can feel a loss, at first I hoped it was a tack or off reading but the boats down 2-3 mph also..

Originally Posted by mike tkach
tim,can you feel a power loss on one engine or is it just different tach readings?
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Old 08-10-2016 | 04:43 AM
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haha maybe that's the issue!!

Originally Posted by phragle
finite adjustment of the turbo-encabulator?
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Old 08-10-2016 | 07:34 AM
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Originally Posted by Full Force
I did in fall both engines all 16 within 5 psi across board ..
How many hours ago, though? Might be worth another quick check just to make sure it is nothing internal cropping up. Tranny maybe?
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Old 08-10-2016 | 07:42 AM
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Originally Posted by Knot 4 Me
How many hours ago, though? Might be worth another quick check just to make sure it is nothing internal cropping up. Tranny maybe?
I can't see how this would be Stecz's fault, but you never know.......
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Old 08-10-2016 | 08:15 AM
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Fuel pressure the same on both engines?

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Old 08-10-2016 | 08:26 AM
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my guess is valve seal issue on one engine.time for another leak down check.
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Old 08-10-2016 | 08:27 AM
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20 hours ago, also remember rpm drop was there before last falls compression testing so that's not gonna be it, also if engine was down a cylinder that would have shown on dyno also.

Originally Posted by Knot 4 Me
How many hours ago, though? Might be worth another quick check just to make sure it is nothing internal cropping up. Tranny maybe?
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Old 08-10-2016 | 08:29 AM
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Why would they dyno identical then? Was down most of last summer, dynoed identical and still down, not sure how that can be a cylinder issue, yes I know I have potential disaster bob cams but if down a cylinder that woukd have shown on dyno. I could be wrong but the issue was there way before dyno, not on dyno then again after dyno, so I don't think it's mechanical in engine.

Originally Posted by mike tkach
my guess is valve seal issue on one engine.time for another leak down check.

Last edited by Full Force; 08-10-2016 at 08:35 AM.
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Old 08-10-2016 | 08:29 AM
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Yes 6-7 psi
Originally Posted by GETTINBYE
Fuel pressure the same on both engines?

Mark
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Old 08-10-2016 | 08:49 AM
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Originally Posted by mike tkach
my guess is valve seal issue on one engine.time for another leak down check.
If it has not been mentioned earlier within this thread, then a leak down test is one of the best tests you can do as suggested here by Mike Tkach....it eliminates a lot of guess work-----and it does not matter how fresh or new the engines are.
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