oczuk32 Posted Thursday at 05:22 AM Share Posted Thursday at 05:22 AM Tried starting the engine this evening and it sounded like it completely lost compression. Any thoughts? Link to comment Share on other sites More sharing options...
bushytails Posted Thursday at 02:26 PM Share Posted Thursday at 02:26 PM Are the accessories (alternator, etc) turning? Link to comment Share on other sites More sharing options...
oczuk32 Posted Thursday at 05:31 PM Author Share Posted Thursday at 05:31 PM 2 hours ago, bushytails said: Are the accessories (alternator, etc) turning? Everything is turning over and getting spark. It cranks, but then stalls out. Based on what someone mentioned, the old varnished fuel may have damaged the valve seat seals or piston rings, causing a loss of compression. I drained the old fuel from the tank and blew out the fuel lines with compressed air. Then I added a couple gallons of fresh gas along with a treatment. I suspect the treatment is doing its job by breaking down the varnish in the tank—but that might be sending residue into the engine. I’ll monitor how it performs over the next few days. Link to comment Share on other sites More sharing options...
bushytails Posted yesterday at 12:42 AM Share Posted yesterday at 12:42 AM If everything is turning, you probably just washed the cylinder walls, and it'll sound normal again after you fix the fuel problems and get it running for a bit. Link to comment Share on other sites More sharing options...
el_freddo Posted 11 hours ago Share Posted 11 hours ago Worst case scenario your valves are stuck open from some gummy crap. You should be able to pull them closed again with the rocker covers removed. If it happens again afterwards, I’d be looking at spraying some sort of solvent or fresh fuel down the intake while cranking to hopefully clean up the gum that’s holding them open. Cheers Bennie Link to comment Share on other sites More sharing options...
bushytails Posted 7 hours ago Share Posted 7 hours ago I doubt it's anything actually mechanical, just because it's all cylinders at once. Link to comment Share on other sites More sharing options...
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