I'm looking forward to the day when I have this thing running smoothly and trouble-free...
After finding gas in the crankcase oil, I parked the Sam and today I replaced the fuel pump, making sure that the actuator rod was fully retracted before I installed it. The truck started immediately, idled well for about 2 minutes, then died. On getting out, I noticed a puddle of oil under the engine. Engine would not start again. I used some ether to get it to run just a little bit and the instant it runs, oil pools out on the flat part of the engine back behind the fuel pump right back where I can't see where it's coming from.
It sounds like the motor was just running on what was left in the float bowl.
Then make sure the fuel pump gasket has a good seal. You may want to find a small mirror to extend down there to see where it is actually coming out as someone else cranks the motor.
That's exactly what I thought, too.
Am taking a mirror out there ASAP, but it's raining right now and up here in NE New Mexico we don't complain about rain.
I'm reading up on the distributor O-ring leak. I did take the dist cap off so that I could get to the pump bolts easier. Could I have knocked something loose? I doubt it.... it's probably a poor seal on the pump.
Thanks for the help- I sure wish I could return the favor! Anything you want to know about guitar setup, ranching, coyote hunting, or Kawasaki KX125s?
I got a mirror in there and it does indeed look like the very bottom of the pump isn't seated. I think I can see a little oil drip there. It was raining/snowing and freezing in the garage and the overhead lights woudn't turn on because of the cold, so I just bagged it until tomorrow. Supposed to be sunny and 55 then.
Wonder why the pump didn't seat though? I cleaned the gasket surface, turned the engine over by hand until the pin was retracted, and everything went together smooth.
That pin doesn't move very much does it? Maybe 1/8" at best?
I got a good look at everything and it is definitely leaking from the bottom of the fuel pump. I could see little spittles of air coming out when we cranked over this morning. I removed the new fuel pump and here's where it gets ugly.
Neither the old pump nor the new one seat well. When I hold them both in place, the mating surface looks curved so that there's a gap at either bolt, depending on which one you favor. When I removed the original pump yesterday, there was no gasket and a bunch of RTV sealant. I thought "oh well, they just didn't have a gasket". However, it looks to me like there's got to be sealant in there. I hate that, but that's what I did, too. Removed my new pump, put some RTV on the gasket surfaces- enough to seal- and then tightened it all down, as evenly as I could.
I'm not happy about this, but I don't see anyway to make that mating surface flat and it looks like the engine side that's lopsided.
Temp's 55 today. Sunny. Nice.
Last edited by NMHighPlains; 03-09-2010 at 01:26 PM.
I have never seen that happen so bad in such a small surface. But if it isn't a buildup of burnt oil that is causing the problem, then I would pull the head and find a machine shop that can mill the mating surface. It may be the engine's way of telling you that it "would like to have a rebuild, please".
in old El Paso...
But if it isn't a buildup of burnt oil that is causing the problem,
then I would pull the head and find a machine shop that can mill the mating surface. It may be the engine's way of telling you that it "would like to have a
Gasket surface is as clean as can be.
I may do that later this summer when the weather turns better and I start spending more time at the garage (I have a Ford 8N that needs a new head, too). For now, I'd like to just drive the thing a little bit. All I've done since I got it is work on it. I just want to be reassured that it's worth all this effort.
Back to work- I'm putting my '02 Yamaha Grizzly back together so it'll be ready for this summer's work. I re-did our '05 after it bent a valve thank to a slipped cam chain, and it came out so well I decided to do the '02 this winter. Hi-compression piston (we're at 6,000') really gave the '05 a ton of low-end pull. I want to get the Grizzly up and running and then I might pull Suzy into that spot and get to work.
And BTW- I got the Hankook Dynapro MT tires. We had a bunch of snow and mud and drove it around just a little before I started on the fuel pump. Terrific traction!
Put a straight edge across the pump and also across the mounting surface one of them must be warped. It used to happen quite a lot on the old 2 bolt flange fit carbs when they were overtightened. We used to square them off with a file and then finish with wet and dry on a glass plate.
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