Engine Popping
#1
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Engine Popping
Just gone thru total re-build of HP500 (including carb).
During timing (out of the boat), engine popped. It showed on the timing light. Made some adjustments and did not see it again until under load and testing in water. Problem starts around 2000RPM. Engine pops, tach fluters down and it happens intermitent but consistently. Runs fine at high idle in gear and out. Swaped module, coil, coil wire and carb with other engine. Going to check grounds and Oil pressure shut off...Any other ideas?
With Memorial day coming, any help would be greatly appreciated.
Dan
During timing (out of the boat), engine popped. It showed on the timing light. Made some adjustments and did not see it again until under load and testing in water. Problem starts around 2000RPM. Engine pops, tach fluters down and it happens intermitent but consistently. Runs fine at high idle in gear and out. Swaped module, coil, coil wire and carb with other engine. Going to check grounds and Oil pressure shut off...Any other ideas?
With Memorial day coming, any help would be greatly appreciated.
Dan
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Just gone thru total re-build of HP500 (including carb).
During timing (out of the boat), engine popped. It showed on the timing light. Made some adjustments and did not see it again until under load and testing in water. Problem starts around 2000RPM. Engine pops, tach fluters down and it happens intermitent but consistently. Runs fine at high idle in gear and out. Swaped module, coil, coil wire and carb with other engine. Going to check grounds and Oil pressure shut off...Any other ideas?
With Memorial day coming, any help would be greatly appreciated.
Dan
During timing (out of the boat), engine popped. It showed on the timing light. Made some adjustments and did not see it again until under load and testing in water. Problem starts around 2000RPM. Engine pops, tach fluters down and it happens intermitent but consistently. Runs fine at high idle in gear and out. Swaped module, coil, coil wire and carb with other engine. Going to check grounds and Oil pressure shut off...Any other ideas?
With Memorial day coming, any help would be greatly appreciated.
Dan
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If it is when you first start to give it the gas, check the adjustment of your accelerator pump. Sounds like you are under load already, so this may not be it. Thought maybe a lean miss-fire? Go with the ignition check up. Good advice!
Dave
Dave
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Air, Sea, and Land...Exploring the planet in 3-D!