thompsoncustom
Member
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- iowa
My humvee has started to smoke on start up quite a lot for the first 3 seconds and then cleans up and is fine.
Things I've checked so far:
Glow plugs have 22.9v going to them when the Wait light is on.
All glow plugs Ohm good but 1 is bad (open) on the rear drivers side cylinder.
Vent line and filter are clear back to the tank.
So that 1 plug has been bad for a couple month and you could just see some smoke if you were looking but now there is a huge cloud and heavy smoke for 3 second. Smoke smells like fuel so I'm thinking maybe one of the injectors is leaking into the cylinder. I'm thinking of pulling all the glow plugs and using a bore scope to see which cylinder looks washed to identify the injector.
Any other tips on what I should check, after starting humvee runs and idles good.
Things I've checked so far:
Glow plugs have 22.9v going to them when the Wait light is on.
All glow plugs Ohm good but 1 is bad (open) on the rear drivers side cylinder.
Vent line and filter are clear back to the tank.
So that 1 plug has been bad for a couple month and you could just see some smoke if you were looking but now there is a huge cloud and heavy smoke for 3 second. Smoke smells like fuel so I'm thinking maybe one of the injectors is leaking into the cylinder. I'm thinking of pulling all the glow plugs and using a bore scope to see which cylinder looks washed to identify the injector.
Any other tips on what I should check, after starting humvee runs and idles good.
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