Check your pick up tubes before you install the rebuilt engine. Don't assume anything.. Nothing is worse then fixing the same thing twice.
Thread: Engine losing power
Results 21 to 34 of 34
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05-26-2010 09:33 PM
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05-31-2010 06:16 PM
nothing in pick up tubes. replaced #6 exhaust valve and put in two new billet fuel pumps and guages. fuel pressure is good at7lbs at idle and 6lbs at running. Once again engine got up to 2000 rpm before port motors rpms fell off. Getting frustrated now and I know the engine builder is also.Next move is taking engine out and putting it on dyno. Don't know what else to do.
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05-31-2010 07:36 PM
So fuel pressure is stable during power loss? Are all other gauges normal? Did you try disconnecting the tach? Have you tried a jumper lead to the ignition on the engine? Can you check to see if the timing is stable during power loss? I hate phantom problems...Good luck.
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05-31-2010 08:50 PM
good fuel pressure... low volume?
Now recruiting Mississippi power boaters.
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06-01-2010 11:03 AM
Yes, fuel pressure stays the same. I did try diconnecting the tach. I have not tried a jumper lead to the ignition yet. Timming has been checked and seems to be fine. This one is driving me nuts. I will now be going on week #3 and in NJ our summers are too short to have this kind of problem. Thanks for your advice. I will try jumping ignition
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- Join Date
- Oct 2008
- Location
- Georgetown, TX
- Posts
- 426
06-01-2010 11:38 AMwill it rev out of gear?
Boat-less...
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- Join Date
- May 2010
- Posts
- 3
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06-09-2010 04:06 PM
Found the problem... Switched Tachs and the engine giving me trouble, came to life. The other engine developed the same problems the previous engine did. Seems the tach was bad and causing some sort of short. Brand new Livorsi guages..... Well looks like I'll be back boating this weekend. Once again thanks to everyone for all your input... Have a GREAT boating season and be safe..
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06-09-2010 04:27 PM
Great,, Thanks for following up with the answer to your problem
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- Join Date
- Mar 2010
- Location
- MD,,,chesp
- Posts
- 44
06-10-2010 07:50 PMhate to sound stupid, do you have exhaust sensors, My bud Big Block has a bad senor..that did it///
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