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Had the vent and return lines switched up near the lift pump. Problem solved.

I don't have the tube on from the manifold to the air cleaner. Would this make a difference with the diesel dripping from the bottom a air filter cannister rubber boot? I also going to look at valve that is behind air cleaner, I think it is some type of one way vent valve, it small and is...

Up and running and motor back in Hmmwv. I'll post up some before and after picks and lay out all of the 6.5 parts that came out of engine. Short version of the rebuild. New bare casting heads, .20 over on engine bore, engine kit bearings, pistons, oil pump, water pump etc., new IP pump and...

8 new injectors coming today, plus with the .20 bore on all 8 cylinders- I worried about lighting up all 4 tires when I leave the stop light.

New heads back from machine shop, got bare castings. I had my original heads, plus 2 I found magna fluxed and the all had cracks. Maybe 2 weeks or so and should be rolling coal.

The valve covers came off and I had two stuck valves. I figured I already sunk 1,500 into a new DB2 IP, lets keep going and ship it to the machine shop. Currently magna fluxed and is bored 30 over, just waiting for an engine kit while the heads are being rebuilt.

After a few months of part time working on it and research on this site and others. We have a running engine. I believe it was stuck rings not providing enough compression. Marvel mystery oil thru glow plug holes with syringe, crank a few times , let sit for a day , repeat. While cranking...

I'm looking for a better compression tester to borrow, and thought about the oil trick. Any particular type or weight.? Thanks

M998 compression test - No start Gov Planet purchase , no start and knocking on cranking in description before I bid. I've finally got a compression test and have low of 60 psi and high of 240 psi on cylinders. Harbor freight compression tester for gas motors only goes to 300PSI, but I...

I took off the water pump to check the timing marks and they are good. It is vey clean behind the plate that holds the water pump, which leads me to believe that this is a low mile motor, 3300 miles with a rebuild date of 2006 in Maine. Would a shot of either in its earlier life take out the...

So after much research, got a compression test gauge, for gas engines, only goes to 300 psi, but I used it. It had the M10 thread fitting to adapt to glow plug holes. Took out all the glow plugs, remove wires from injector pump and let it crank. I got a high of 230, a few at 120 and front...

I just used that as a reference to start with.

Can someone describe what the fuel pulsing out should look like when line off at injector and line off at back of injector pump?. I still may have air in the lines, but I've tried a few different ways to bleed air. Thanks

Thank you, the old one went to a diesel shop and was diagnosed with a bad head and rotor. I got a 5209 pump rebuilt from Hummer parts guy , I will research the cold advance switch. I still have the manifold off, I'll put it back on also. Got a little more black smoke coming out of tail pipe...

I’m going to try the valve stem in the fuel cap to pressurize the fuel tank. I’m drawing out of a 5 gallon can belowthe lift pump now. I drained all the old fuel out of tank put in new plug. Let’s see if that works.

Going to have to call in the experts, or the diesel shop down the street. Still no start after new injection pump, new S3 start box and TSU, new glow plugs, two new batteries and grounding harness. Old db2 injection pump tested bad at start rpm, got a rebuild from Hummer Parts guy...

The shop charged 200 for testing. I'm fine with that, but they wanted $1,700 to rebuild.

Injector pump tested bad at start RPM, needs new head. I going to look for a remanufactured one. Any ideas where to shop online? It's a 6.5 NA, I see two types for 6.5 The NA's and the Detuned?