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  • grancito's Avatar
    08-31-2020, 07:56 PM
    grancito replied to a thread Troubleshooting Lift Pump in Engine
    I always have a problem with this site to send photos, and they are usually rejected for size. This time I can't access my camera or computer files,...
    61 replies | 1082 view(s)
  • grancito's Avatar
    08-31-2020, 03:30 PM
    grancito replied to a thread Troubleshooting Lift Pump in Engine
    After priming, I didn't try to compress them, but did compress a used one, that had oil in it, to take it apart. Any indication of the reason they...
    61 replies | 1082 view(s)
  • grancito's Avatar
    08-14-2020, 02:20 PM
    grancito replied to a thread Troubleshooting Lift Pump in Engine
    How long did it take to get pressure? The filter problem I had, caused oil pressure delay, the same as after an oil change, about 10 seconds, which...
    61 replies | 1082 view(s)
  • grancito's Avatar
    08-13-2020, 11:26 PM
    grancito replied to a thread Troubleshooting Lift Pump in Engine
    OK good, one more possibility eliminated. The only other test I can think of, is to push the "closed valve"open, it is possible by hand, and have...
    61 replies | 1082 view(s)
  • grancito's Avatar
    08-13-2020, 09:28 PM
    grancito replied to a thread Troubleshooting Lift Pump in Engine
    The standard used ones I have are 0.922 inches
    61 replies | 1082 view(s)
  • grancito's Avatar
    08-13-2020, 06:08 PM
    grancito replied to a thread Troubleshooting Lift Pump in Engine
    Did you keep an old lifter? A wild guess from me is that you could have 10 thou oversize original lifters, and new loose ones are letting the oil in...
    61 replies | 1082 view(s)
  • grancito's Avatar
    08-10-2020, 10:50 PM
    grancito replied to a thread Troubleshooting Lift Pump in Engine
    Good, Walt was helpful with my engine, I hope he comes up with a solution, I'll wait for results.
    61 replies | 1082 view(s)
  • grancito's Avatar
    08-10-2020, 02:19 PM
    grancito replied to a thread Troubleshooting Lift Pump in Engine
    Send SSD an email, they are helpful, the parts are theirs, and they may have seen the problem before.
    61 replies | 1082 view(s)
  • grancito's Avatar
    08-10-2020, 02:59 AM
    grancito replied to a thread Troubleshooting Lift Pump in Engine
    There is so much "use silicone instead of gaskets" these days, I had to ask. The mineral spirits question ......? What is it other than a non...
    61 replies | 1082 view(s)
  • grancito's Avatar
    08-10-2020, 12:58 AM
    grancito replied to a thread Troubleshooting Lift Pump in Engine
    I bought the lifters rods and rockers from rock auto because SSD didn't stock all of the parts, they worked fine, then bought 2 heads from SSD and...
    61 replies | 1082 view(s)
  • grancito's Avatar
    08-09-2020, 10:08 PM
    grancito replied to a thread Troubleshooting Lift Pump in Engine
    It is now more confusing because both heads have a compression problem. You need to measure a push rod length, and compare with an old one. Where did...
    61 replies | 1082 view(s)
  • grancito's Avatar
    08-09-2020, 08:09 PM
    grancito replied to a thread Troubleshooting Lift Pump in Engine
    When the lifter is in the back of the cam position, any force from the push rod, will overcome the weak spring in the lifter, and push the tiny...
    61 replies | 1082 view(s)
  • grancito's Avatar
    08-09-2020, 07:33 PM
    grancito replied to a thread Troubleshooting Lift Pump in Engine
    I don't have the spec for the valves, only read it and didn't save it because I had new heads and block. The valve grind should not be a problem, as...
    61 replies | 1082 view(s)
  • grancito's Avatar
    08-09-2020, 06:30 PM
    grancito replied to a thread Troubleshooting Lift Pump in Engine
    Yes you need the starter for a compression test. Hopefully you didn't lap the valves in a lot, the lifter tolerance is limited, but I can't remember...
    61 replies | 1082 view(s)
  • grancito's Avatar
    08-09-2020, 05:21 PM
    grancito replied to a thread Troubleshooting Lift Pump in Engine
    It spins clockwise, the air out the intake sounds bad. There is an exhaust port on the intake side of each head, for S vin engines to recirculate...
    61 replies | 1082 view(s)
  • grancito's Avatar
    08-09-2020, 03:43 PM
    grancito replied to a thread Troubleshooting Lift Pump in Engine
    You should be able to turn some of the push rods. Check if any push rods have up and down movement, push down on the rod end of the rocker to check...
    61 replies | 1082 view(s)
  • grancito's Avatar
    08-05-2020, 08:35 PM
    grancito replied to a thread Troubleshooting Lift Pump in Engine
    From memory, a bad crank sensor will give a no start, but the engine will start without it connected. When you said the engine turns over "not so...
    61 replies | 1082 view(s)
  • grancito's Avatar
    08-01-2020, 09:21 PM
    grancito replied to a thread Troubleshooting Lift Pump in Engine
    I have not heard of head differences causing a problem. Big job to remove the rocker covers, but I can't think of why it won't start. I have run mine...
    61 replies | 1082 view(s)
  • grancito's Avatar
    08-01-2020, 02:35 PM
    grancito replied to a thread Troubleshooting Lift Pump in Engine
    It won't be cranking backwards unless you put a marine starter on it, designed for a counter rotating engine. I see no point in bleeding the last two...
    61 replies | 1082 view(s)
  • grancito's Avatar
    07-29-2020, 06:36 PM
    grancito replied to a thread Troubleshooting Lift Pump in Engine
    Ok, so you should have oil pressure, unless the non return on the oil filter was faulty, I have had that, and the engine runs a while before getting...
    61 replies | 1082 view(s)
  • grancito's Avatar
    07-29-2020, 05:07 PM
    grancito replied to a thread Troubleshooting Lift Pump in Engine
    A video won't help diagnose the problem. I think I used a syringe to fill the new lifters, but they have to be removed, that is a huge job. New or...
    61 replies | 1082 view(s)
  • grancito's Avatar
    07-29-2020, 02:38 PM
    grancito replied to a thread Troubleshooting Lift Pump in Engine
    Did you change the lifters? New ones need to be primed. I had a customers pickup in the workshop once, for 3 weeks, and the lifters bled the oil out,...
    61 replies | 1082 view(s)
  • grancito's Avatar
    07-28-2020, 07:37 PM
    grancito replied to a thread Troubleshooting Lift Pump in Engine
    Did you replace the timing chain, if not, there should be no reason for a TDC relearn. I replaced the IP on the GMC truck and it has been running...
    61 replies | 1082 view(s)
  • grancito's Avatar
    07-28-2020, 02:09 PM
    grancito replied to a thread Troubleshooting Lift Pump in Engine
    The lock was really worn, it had too many keys swinging from it. The shaking could just be because of the limited number of cylinders firing. I can't...
    61 replies | 1082 view(s)
  • grancito's Avatar
    07-27-2020, 01:23 PM
    grancito replied to a thread Troubleshooting Lift Pump in Engine
    My suburban's ignition barrel did the same, I had to pull the ECM fuse to stop the engine. You have to remove the steering wheel to get to the...
    61 replies | 1082 view(s)
  • grancito's Avatar
    07-25-2020, 10:08 PM
    grancito replied to a thread Troubleshooting Lift Pump in Engine
    They will start on 5 glow plugs, and run rough for half a minute, blowing white smoke then clatter with a big puff of black smoke. The vapour from...
    61 replies | 1082 view(s)
  • grancito's Avatar
    07-25-2020, 04:48 PM
    grancito replied to a thread Troubleshooting Lift Pump in Engine
    There is no need to bleed all of the injectors, 2 is enough. The glow plugs are needed on engines with poor compression, even when they are almost at...
    61 replies | 1082 view(s)
  • grancito's Avatar
    07-25-2020, 12:25 AM
    grancito replied to a thread Troubleshooting Lift Pump in Engine
    Good you have fuel to the injectors. Next, are you getting enough glow plug time, 8 seconds? The other, is did you time the cam shaft correctly, and...
    61 replies | 1082 view(s)
  • grancito's Avatar
    07-24-2020, 04:20 PM
    grancito replied to a thread Troubleshooting Lift Pump in Engine
    The shut off solenoid opens when the the ignition is on, have someone turn the key on and off and listen for the click or feel for it. You can remove...
    61 replies | 1082 view(s)
  • grancito's Avatar
    07-24-2020, 01:39 PM
    grancito replied to a thread Troubleshooting Lift Pump in Engine
    The system that year is a bad design, the pump does nothing until you operated the starter, or there is oil pressure. To get fuel through to the...
    61 replies | 1082 view(s)
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3 Visitor Messages

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    thanks 4 info
  2. View Conversation
    hey man can u tell me what my trany temp. should run at normal and high thanks
  3. View Conversation
    i put a boost control switch on mine the switch that is mounted on the intake i think thats what it is called and wow mine is running like a new truck no smoke at all now thanxs for all the help thanxs scott
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About grancito

Basic Information

About grancito
Biography:
Retired engineering and auto repairer
Interests:
making things, mainly from steel, fishing, or just getting out boating
Occupation:
watching the bay for good weather to go out there
Year:
1994
Make:
GMC
Model:
2500 HD suburban 4X4 auto
Mileage:
150,000-249,999
Modifications:
#9 resistor, manual waste gate
Other Trucks:
1982 Chev silverado diesel 1/2 ton 4X4 short bed
1995 6.5 turbo diesel Gmc 4x4 extra cab long bed

Signature


Grant H.
1995 6.5 turbo GMC K2500 extra cab 4x4 pickup, PMD under bumper, mechanical wastegate, 228,000 miles, rebuilt engine, 4.10 diff, 16 mpg
1994 6.5 turbo GMC K2500 4x4 suburban #9 resistor, PMD in the bumper, mechanical waste gate, 226,000 miles, 3.73 diff, 16 mpg
1982 4x4 shortbed 6.2 Chev 260,000 miles untouched motor 17 MPG 4.27 diff. Best thing I ever owned, since 1992.

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