Deano
Well-Known Member
- Joined
- Sep 27, 2007
- Messages
- 455
- Reaction score
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I have a 555 with a 4.0 whipple in my boat that was built by Young Perfomance. It has a DIS ignition with a coil on each cylinder.
Long story short... It was dynoed, installed, and lake tested by a top builder in SoCal. As soon as I got it on the water it wanted to
misfire or basically shut off and back on at 3,500 rpm. The problem was spuratic. It would run great then again a problem around 3,500rpm.
I had two of the top guys in Havasu look at the boat and they could not figure it out. Even talking to Eddie Young on phone!
After the season ended, I brought it to a different top builder in SoCal. They water tested the boat. Changed a coil pack and said the crank
trigger was out of adjustment.
I took the boat out last weekend it ran amazing for an hour then back to the problem at 3,500. Then again good for 30 minutes then back to the problem.
I've had the best of the best look at this thing and the problem is still there.
Could it be as simple as a crank sensor? I was going to change that next time I'm in Havasu. Possible ground or frayed wire? Maybe a new harness is in order?
It's getting ridiculous.
What else is there other than putting a distributor in it?
Long story short... It was dynoed, installed, and lake tested by a top builder in SoCal. As soon as I got it on the water it wanted to
misfire or basically shut off and back on at 3,500 rpm. The problem was spuratic. It would run great then again a problem around 3,500rpm.
I had two of the top guys in Havasu look at the boat and they could not figure it out. Even talking to Eddie Young on phone!
After the season ended, I brought it to a different top builder in SoCal. They water tested the boat. Changed a coil pack and said the crank
trigger was out of adjustment.
I took the boat out last weekend it ran amazing for an hour then back to the problem at 3,500. Then again good for 30 minutes then back to the problem.
I've had the best of the best look at this thing and the problem is still there.
Could it be as simple as a crank sensor? I was going to change that next time I'm in Havasu. Possible ground or frayed wire? Maybe a new harness is in order?
It's getting ridiculous.
What else is there other than putting a distributor in it?