95 400 explorer engine problems
#1
95 400 explorer engine problems
My kid was out riding the atv and it died. Hauled it into the shop and noticed the plug wire came out of the boot. No problem, right?! Reconnected, started it and fired right away and redlined without touching the throttle. Shut it down right away, waited a few minutes and tried to start it again, no dice. I could hear chirping in the jug as it was turning over. Check spark, all good. Tested compression, about 60-70 now. The topend and bottom end was rebuilt 200 miles ago.
Do you think it's a top end issue or bottom end or both. Why would it redline from just starting without touching the throttle?
Do you think it's a top end issue or bottom end or both. Why would it redline from just starting without touching the throttle?
#2
#3
#4
I had just replaced the plug when I resolved the plug boot issue, so it was nice an shiny.
#5
oil injected. Odd thing with the carb is I had recently tore it down, clean in solvent and reassembled. It was running like a champ until this issue.
It had a wiesco piston in it.
#7
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#8
Don't know if this makes sence or not but, when the spark plug wire pulled out, it most likely got flooded bad. When you started it after fixing the lose of spark, it most likely took off because of the flooded condition.
When you again shut it off, it most likely was still flooded and fouled the plug. A badly flooded engine will wash the cylinder wall down and kill your compression.
I'd try putting a table spoon of oil down the spark plug hole to re-oil the cylinder and turn it over for a bit with the plug out. Then throw a new plug in her and give it a try.
When you again shut it off, it most likely was still flooded and fouled the plug. A badly flooded engine will wash the cylinder wall down and kill your compression.
I'd try putting a table spoon of oil down the spark plug hole to re-oil the cylinder and turn it over for a bit with the plug out. Then throw a new plug in her and give it a try.
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