I've been having real issues with my 1GM10
. The problems started with a large puff of white smoke, and the engine
stopping completely. She went un-attended for four months (I stopped sailing), and just recently I have had the chance to look at the engine
After much head-scratching, I pulled the injector out, only to see it was completely clogged. I thought this was the issue, and promptly replaced it. I also installed a Racor fuel filter
(I had been only using the single
filter onboard the engine...), and also installed fresh fuel
lines. I replaced the engine-mounted filter, bled through the system and found a bit of water
in the tank, which, thankfully for the new Racor
I can see - I drained it, and pumped through all fresh fuel
. I bled out all the usual spots, and then cranked the engine at full throttle with the injector line unbolted - Fuel is coming through as it should.
The engine cranks, and copious amounts of white smoke comes out of the exhaust
. The boat is on land, so I've been cranking it with the impeller out. You can hear the engine wanting to start, but it just can't do it. A considerable amount of white smoke is coming out, and it is definitely smoke, not water
I've just spent four hours breathing this smoke in, re-bleeding the lines, bypassing the new Racor to make sure it's not that... Etc. Eventually I pulled the new injector out, and ran it pointing upwards so I could confirm there wasn't another blockage - The spray pattern is excellent, so the injector pump
appears to be doing a good job, and the injector is definitely not the issue.
I simply don't know what else could be wrong... Maybe it is compression
? Is it possible it's the head gasket
? If so, should there be visible leaks
or any way to see that is the problem without some kind of compression
tester? I did get it started last week briefly, and the engine was very un-responsive to any throttle movement...
Prior to all this, the engine had over time begun to blow more and more white smoke. At one point I had overheating
problems, however they magically went away. I could never figure it out... I even tried with an infrared thermometer and the engine was at a reasonable temperature... The seacock was never blocked. It was, and still remains a mystery. I only mention it as it may help in a diagnosis...
out across the Pacific this year, and I'm very nervous about never getting the engine back to a reliable state... And funds are running low as always!