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  1. 6.5L Diesel Engine
    Background: My truck is an ex-ambulance that I've converted into a 4-season camper. It was my first ever diesel engine, and there were a lot of small things wrong with it that I would overlook due to thinking they were just "old diesel truck things". For example, it struggled to maintain speeds...
  2. 6.5L Diesel Engine
    This is kinda long, but I believe it's all related. Ever since buying this truck earlier this year, I've had intermittent stalling problems. She's been towed 6 times with the last being the most troublesome. 3 weeks prior to the last tow 7 weeks ago, I fired the truck up to get the ac blowing...
  3. 6.5L Diesel Engine
    I have 92 6.5 diesel. I just went to crank it and th engine started spinning really fast. The belts all move but it’s like the engine is not spinning the pistons Curious what y’all think it is. I just drove it cut some grass hopped back in the. This happened
  4. 6.5L Diesel Engine
    Hey guys, Got a problem. Had a new injection pump put in my truck. Didn’t go 500 miles and now I have a loud knock, white smoke, and oil coming from the top of the engine. Looks like the oil is coming from a valve cover? Where the turbo connects? No exactly sure. Has anyone had this problem...
  5. 6.5L Diesel Engine
    So I relocated my PMD on my 99 GMC Savana, 3500. It still didn't run very well, my mechanic friend advised me to chuck the $40 one I got off eBay, and get a proper Stanadyne PMD. So I did, and I bought a #9 resistor to go with it. I've since learned that it might just need help reading the...
    6.5
  6. 6.5L Diesel Engine
    How interchangeable are the different GM-4,5,6,8,etc... turbo parts? I have three: a 95, an 97, and another with no "GM_" number. I polished up the compressor housing on the one missing the tag wanting to put it on the 1997, but it has a slightly different shape. CHRA's look basically the same...
  7. 6.5L Diesel Engine
    Hi all. Have a 1997 6.5 dually, F engine. Code P0238 shorted high. I have borrowed a Tech II and am looking at real time data. I have 29 psi boost registering at idle. My question for the gurus is 2 fold. Where does the 1997 truck get its ambient pressure reference from. I remember older trucks...
  8. 6.5L Diesel Engine
    Hi my TOUR BUS IS PUFFING MORE WHITE SMOKE THEN WILLEY NELSON ITS, A (2000 chevy G3500 express school bus 6.5l L65) Has white smoke from start tell i turn the key off .... I do mean smokes heavily so heavily in fact that I see why they keep the six five in military applications even if they're...
  9. 6.5L Diesel Engine
    So I have a '95 K2500 (F series, 8600 GVW model with engine and transmission oil coolers in front of the AC condenser in front of the radiator, and 4.11 rear gears) with the 6.5TD, long bed, club cab with 4L80e transmission. Bought it in 2011 and have long followed the advice on this board that...
  10. 6.5L Diesel Engine
    This is the third hydroboost that's done this. (Though first time I've done this test in my driveway) Sitting in my driveway if I apply brakes while turning steering wheel in either direction, power steering fluid leaks fron where the master cylinder meets the hydroboost. This mostly happens...
  11. 6.5L Diesel Engine
    Hello all, I am new to this forum and hoping I can get some help. I have a 1995 k2500 suburban 4x4 with the stock 6.5 gm diesel out of a 1998. It has approx. 140k on it. My issue is I cannot keep it from overheating when I am towing my camper. Which fully loaded with gear and all that good stuff...
  12. 6.5L Diesel Engine
    Truck is a 97 K1500 L56 6.5 Auto with 208k miles on it. It had sat for 2 years before I picked it up. Previous owner didn't have the starter braced and using a Napa brand starter it broke off the bolts. But before this he spent $3000 with a new fuel pump (I'm guessing lift pump, idk if these...
  13. 6.5L Diesel Engine
    Hey everyone I have been the owner of a 6.5 for a couple years now and really wish I would have found this forum when I purchased this vehicle. It has been converted into a short school bus and become my traveling home. I am currently stranded with issues that have me scratching my head and more...
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