Demographics: tell us about your truck and your ambient conditions:
- Year: __1994____
- Truck model and class (ie: c2500) __GMC 3500_______
- Automatic or Standard _____standard_____
- Mileage: (indicate miles or km) ___168000______
- Replaced parts and mods (IP, PMD, chip/PCM, TM, injectors etc) ____Got a tested injection pump and PMD _______
- Model: ‘S’ or ‘F’ engine, NA or Turbo, EGR? ______________
- Ambient outside temp: (indicate *C or *F) _________Turbo_
- What fuel are you using? (#1 Diesel, #2 Diesel, Bio, VO, WVO, etc) ____#1 Diesel_____
- What fuel additives are you using? ____none _______
- Where are you located? __Kansas___________
General maintenance: inspect and evaluate the condition of each. When were they last changed?
- Air filter ___New Hastings _____
- Fuel filter ____New Hastings_____
- CDR Valve? _________
- Coolant – last flushed/replaced at ___All new just replaced yesterday__________
- Oil – synthetic/regular, changed at ____All new 15-40_______
- Batteries – state of charge, (matched set) replaced at _____________
- Battery cables and grounds (removed, cleaned and tightened): ________Just put on but I will double check______
- Glow Plugs - how many miles on them? ___All NEW______ What type? ___AC DELCO_________
- Injectors - last changed at ____Just pop tested when put in engine___________
History: (Describe how the problem first appeared.)
- What were you doing when it happened? ___6.2 conversion new install___________
- How was the truck running fine before this problem appeared? _____________
- Has this problem ever happened before? ____Truck had a known ip pump problem so I got a different tested one. ___________________
- Describe any related factors that might be part of the problem. ______________
- Have you checked for DTC (Diagnostic Trouble Codes)? (Y.N) _Y___ And? _____Just get code 12 (Diagnostic?)___
Diagnostics:
1] Starting:
1a] Does the engine start? __N_______
1b] Does the engine crank over? _____Y It's very close to starting jsut won't go ahead and do it___
1c] Are your batteries fully charged? __Y_______
1d] Have you removed, cleaned, and tightened all battery connections? __No But I will ______
1e] Does your Wait to Start light come on for a time? How long? __Yes about 10 to 15 secs_______
1f] Does your glow plug light come on? ___yes______ For how long? ___10 sec______
1g] Do you see smoke from the exhaust while cranking? What color? _yes Black_______
2] Fuel Issues (if not running):
2a] Can you hear your lift pump working? ___yes_________
2b] Do you get a steady flow of fuel from the water drain (T-handle) ? ______yes___
2c] Loosen the inlet line from the IP – is fuel coming out (Lift Pump on)? __yes_________
2d] Loosen an injector line and crank the engine - does fuel come out? _yes but it's like it's just puking it out not a hard spray________
2e] Do you hear a vacuum (hiss) when you remove the fuel cap? __no_________
3] PMD / IP Issues
3a] Location of PMD (on pump, on intake, remote mounted) ____on pump but I'm gonna relocate_______
3b] Condition of Extension harness (if used) Vendor or Homemade? _________
3c] Condition of grounds / ground wires to IP / PMD. Check Harness. _________
3d] PMD Make: ___________
3e] PMD Age: _____________
4] Stalling Issues
4a] Do you experience stalling only when hot? ____________
4b] Does it stall under particular circumstances? (ie hit bump, or on accel) ______
4c] Does pouring cool water over the IP seem to help with restarting? _________
4d] Is stalling momentary (engine recovers)? _________
4e] Does SES light come on when engine hiccups? _________
4f] Does cruise control quit working when engine hiccups? ___________
4g] Does re-starting seem to reset engine, restoring cruise and power? _________
4h] Changes to dash lights or instruments during stalling events? ___________
5] Running Issues
5a] On cold start, does upper rad hose get hard before engine warms up? _______
5b] Any bubbles or oil film in coolant overflow tank? _______
5c] Any white slime on oil surfaces (dipstick, CDR, oil Fill cap)? __________
5d] Excessive white smoke from exhaust on cold start? _________
5e] Excessive black smoke from exhaust under hard acceleration? __________
6] Performance Issues
6a] Do you have gauges? ___________
6b] Maximum boost under load? ____________
6c] Have you added a performance PCM (reflash) or Chip? ______________
6d] Have you changed exhaust / downpipe / crossover? ________________
6e] Wastegate – mechanical or vacuum? ______________
7] Temperature-related Issues:
7a] Single or dual thermostats? ____________
7b] Have you replaced them lately? Manufacturer of replacements? _________
7c] Have you pulled and cleaned Radiator and coolers lately? ____________
7d] Have you replaced the fan clutch? Manufacturer of replacement? ________
7e] (winter) Have you tested your antifreeze? Good to what temp? __________
7f] (winter) Are you using a winter grille cover? ___________
I'm gonna recheck battery connection.. computer shows no codes other than 12 . I check the oil sensor, crank sensor.. we pulled the wires off them and they coded the computer. Engine is the 6.2 conversion in this 94 6.5 any help would be appreciated..
- Year: __1994____
- Truck model and class (ie: c2500) __GMC 3500_______
- Automatic or Standard _____standard_____
- Mileage: (indicate miles or km) ___168000______
- Replaced parts and mods (IP, PMD, chip/PCM, TM, injectors etc) ____Got a tested injection pump and PMD _______
- Model: ‘S’ or ‘F’ engine, NA or Turbo, EGR? ______________
- Ambient outside temp: (indicate *C or *F) _________Turbo_
- What fuel are you using? (#1 Diesel, #2 Diesel, Bio, VO, WVO, etc) ____#1 Diesel_____
- What fuel additives are you using? ____none _______
- Where are you located? __Kansas___________
General maintenance: inspect and evaluate the condition of each. When were they last changed?
- Air filter ___New Hastings _____
- Fuel filter ____New Hastings_____
- CDR Valve? _________
- Coolant – last flushed/replaced at ___All new just replaced yesterday__________
- Oil – synthetic/regular, changed at ____All new 15-40_______
- Batteries – state of charge, (matched set) replaced at _____________
- Battery cables and grounds (removed, cleaned and tightened): ________Just put on but I will double check______
- Glow Plugs - how many miles on them? ___All NEW______ What type? ___AC DELCO_________
- Injectors - last changed at ____Just pop tested when put in engine___________
History: (Describe how the problem first appeared.)
- What were you doing when it happened? ___6.2 conversion new install___________
- How was the truck running fine before this problem appeared? _____________
- Has this problem ever happened before? ____Truck had a known ip pump problem so I got a different tested one. ___________________
- Describe any related factors that might be part of the problem. ______________
- Have you checked for DTC (Diagnostic Trouble Codes)? (Y.N) _Y___ And? _____Just get code 12 (Diagnostic?)___
Diagnostics:
1] Starting:
1a] Does the engine start? __N_______
1b] Does the engine crank over? _____Y It's very close to starting jsut won't go ahead and do it___
1c] Are your batteries fully charged? __Y_______
1d] Have you removed, cleaned, and tightened all battery connections? __No But I will ______
1e] Does your Wait to Start light come on for a time? How long? __Yes about 10 to 15 secs_______
1f] Does your glow plug light come on? ___yes______ For how long? ___10 sec______
1g] Do you see smoke from the exhaust while cranking? What color? _yes Black_______
2] Fuel Issues (if not running):
2a] Can you hear your lift pump working? ___yes_________
2b] Do you get a steady flow of fuel from the water drain (T-handle) ? ______yes___
2c] Loosen the inlet line from the IP – is fuel coming out (Lift Pump on)? __yes_________
2d] Loosen an injector line and crank the engine - does fuel come out? _yes but it's like it's just puking it out not a hard spray________
2e] Do you hear a vacuum (hiss) when you remove the fuel cap? __no_________
3] PMD / IP Issues
3a] Location of PMD (on pump, on intake, remote mounted) ____on pump but I'm gonna relocate_______
3b] Condition of Extension harness (if used) Vendor or Homemade? _________
3c] Condition of grounds / ground wires to IP / PMD. Check Harness. _________
3d] PMD Make: ___________
3e] PMD Age: _____________
4] Stalling Issues
4a] Do you experience stalling only when hot? ____________
4b] Does it stall under particular circumstances? (ie hit bump, or on accel) ______
4c] Does pouring cool water over the IP seem to help with restarting? _________
4d] Is stalling momentary (engine recovers)? _________
4e] Does SES light come on when engine hiccups? _________
4f] Does cruise control quit working when engine hiccups? ___________
4g] Does re-starting seem to reset engine, restoring cruise and power? _________
4h] Changes to dash lights or instruments during stalling events? ___________
5] Running Issues
5a] On cold start, does upper rad hose get hard before engine warms up? _______
5b] Any bubbles or oil film in coolant overflow tank? _______
5c] Any white slime on oil surfaces (dipstick, CDR, oil Fill cap)? __________
5d] Excessive white smoke from exhaust on cold start? _________
5e] Excessive black smoke from exhaust under hard acceleration? __________
6] Performance Issues
6a] Do you have gauges? ___________
6b] Maximum boost under load? ____________
6c] Have you added a performance PCM (reflash) or Chip? ______________
6d] Have you changed exhaust / downpipe / crossover? ________________
6e] Wastegate – mechanical or vacuum? ______________
7] Temperature-related Issues:
7a] Single or dual thermostats? ____________
7b] Have you replaced them lately? Manufacturer of replacements? _________
7c] Have you pulled and cleaned Radiator and coolers lately? ____________
7d] Have you replaced the fan clutch? Manufacturer of replacement? ________
7e] (winter) Have you tested your antifreeze? Good to what temp? __________
7f] (winter) Are you using a winter grille cover? ___________
I'm gonna recheck battery connection.. computer shows no codes other than 12 . I check the oil sensor, crank sensor.. we pulled the wires off them and they coded the computer. Engine is the 6.2 conversion in this 94 6.5 any help would be appreciated..
