My engine was running fine, except for a weeping water leak on the head. This turned out to be from a crack, so I got the head replaced. Now I have a new problem.
Engine starts easy, runs great. Like a sewing machine. Good water flow, good oil pressure. I put it in gear while tied in the slip, and run it up to 2000-2200 rpm ( I have a 2:1 V-drive). After a few minutes, the temp is up to 110 and it starts to sound a little uneven. Then it starts to occasionally miss. This quickly gets erratic and worse until it stalls, sometimes with a backfire. If instead, I throttle back a little, it helps breifly, but still eventually stalls. After it stalls, if I immediately take it out of gear, set to idle, and hit the starter, it starts right back up and runs smooth.
Here's what I've tried so far, with no effect whatsoever:
1) Drained the carb to check for water or dirt. None found.
2) Drained fuel filter to check for water. None found. Replaced Filter.
3) Checked centrifugal advance in distributor. Mechanism is functional. Verified centrifugal advance with timing light.
4) Adjusted idle timing to everywhere from 0 deg to 8 deg advance. No effect on stalling.
5) Replaced coil. No effect.
6) Tried applying choke when missing starts. Had no effect.
At this point, I'm out of ideas. Need help!
Since the engine was running fine before the head replacement, I'm suspicious that this problem is related. Is that even possible? Can a leaky head gasket produce these symptoms?
Help!!
@(^.^)@ Ed
1977 Pearson P-323 "Dolce Vita"
Engine starts easy, runs great. Like a sewing machine. Good water flow, good oil pressure. I put it in gear while tied in the slip, and run it up to 2000-2200 rpm ( I have a 2:1 V-drive). After a few minutes, the temp is up to 110 and it starts to sound a little uneven. Then it starts to occasionally miss. This quickly gets erratic and worse until it stalls, sometimes with a backfire. If instead, I throttle back a little, it helps breifly, but still eventually stalls. After it stalls, if I immediately take it out of gear, set to idle, and hit the starter, it starts right back up and runs smooth.
Here's what I've tried so far, with no effect whatsoever:
1) Drained the carb to check for water or dirt. None found.
2) Drained fuel filter to check for water. None found. Replaced Filter.
3) Checked centrifugal advance in distributor. Mechanism is functional. Verified centrifugal advance with timing light.
4) Adjusted idle timing to everywhere from 0 deg to 8 deg advance. No effect on stalling.
5) Replaced coil. No effect.
6) Tried applying choke when missing starts. Had no effect.
At this point, I'm out of ideas. Need help!
Since the engine was running fine before the head replacement, I'm suspicious that this problem is related. Is that even possible? Can a leaky head gasket produce these symptoms?
Help!!
@(^.^)@ Ed
1977 Pearson P-323 "Dolce Vita"
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