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No on the Bosch. I (and others) used to recommend them but after many failures and one of which destroyed a piston… Only get the AC Delco 60G. Something about them- make sure you get them from an authorized dealer. There are tons of chinese knock offs that look identical but are garbage...

The isolator is the right answer for mechanical gauge in the cab. Mineral oil on the gauge side is the norm with isolator off the engine but still in engine compartment. The dependency of a snubber to calm the needle is from the type of pump and how it is plumbed. A pump like airdogg that...

Yuppers- seen that many times in di and idi diesel engines. Keep fuel clean & water free, keep injectors lubricated and rebuild on time.

Increase ip output and different pop pressure on injectors are the two main things here. The injectors are reliable, too reliable. Really at 100,000 miles is best to rebuild them or replace them but going to 150,000 for most is great also. If yours are the n/a injectors which get set...

Same subject is on Hummer forum. This is my copy/paste from there: So far im at 4 pms, 3 texts, 1 phone call about “I am” or “should I” go back to chain… This is the first set of failed gear drive I have seen in any 6.2/6.5 . I have no vested interest in these being in existence or not. My...

I can tell stories of guys in the fleet abusing the heck out of 4l80e and they just eat it up. 40mph OD to R shift= a tootsie roll driveshaft but the trans is happy. 300,000 miles with only adding atf & never doing maintenance on grocery getter pickups. About the only thing they don’t...

Same rules apply here as the 6.5… ensure clean bubble free fuel flowing through the ip. Measured pressure at the ip inlet… in metal T is critical. Little rubber flap in the hose to the ip is a more common thing than many realize. It’s been WAY too many years for me to remember pressure range...

The gm and first navistars had gaskets, butas Chris mentioned the p400 didn’t. I am wondering if there is s depth difference in the timing cover mounting face to the block on p400 vs gm. I’m convinced the axles were pinched. The axles have to float freely, if they get pinched the axle binds...

Welcome. I suggest starting by filling out your signature line with rigs and any modifications-Marty did a good example.

Can ya figure a way to test them? I never rebuilt that type, is that doable?

I would chip that bolt head off in a heartbeat. Grinder thin wheel or sawzall. Then yeah drive in the new one the intelligent direction. Thanks engineer #6 who didn’t care about maintenance!

Saved from the south end of Texas!

I ran mechanical fuel pressure gauges in the cab for years, as did many friends. It all worked great until it didn’t. The tiniest of leak made it spray a fine mist. One fire later and a buddy of mine is tearing me a new hole about-why do I want to spend months in the burn ward like he did… I...

I wish I knew which to recommend. For instance, auto meter was always considered an acceptable entry level gauge. Those start at $300 now and are from china & have a higher failure rate than ever before. They have some cheaper but like Marty experienced with the glowshift- the sensors fail...

Sorry, I hit post on accident. Anyways- if you run power from the battery to that pink wore terminal , that is same as having key on. By putting power there and cranking engine over- you should get fuel to the injectors. If you are replacing glow plugs- remove the old ones, then send poser...

Welcome Jason. I’m no good at finding info online & have no old books on these anymore outside my hummer manual- and it’s definitely different. back in the days at the dealership & fleet- there never was a single kit for the harnesses. Glow plug harness is separate- a really good one is a...

Yummy! Sorry to hear but glad you found out the issue. The drawback of filtering down fined is it works the liftpump more so keep an eye on that, and for folks living in a freezer, the finer filter is where the gelling occurs so a heater becomes more of a requirement. Something lacking on the...

But the ATT, A Team Turbo, is double the size (or more) of the ATS, has NO wastegate, etc. Thats why boost is a horrible reference unless two engines are built the same with same turbo, running same altitude, same gear ratio, etc.

@dbdiesel I have added turbos to both 6.2 & 6.5 that were naturally aspirated. I never had good response from them until I turned up my fuel on the db2. It’s not a hard task, requires no money spent. If you don’t know how I can post a link to a video. Contrary to some info out there, it...

Yeah, if no specific reason to keep it, ai would sell it off. You can always turn around and buy a different lil run around car once there. As for what parts to buy/ swap- belts and hoses are something usually neglected. On the hose clamps- buy high quality not low cost- clamps fail more...