nookiemonster
New Member
: Explain your problem in concise language (ie: Cranks but won’t fire).truck turns over and will start after awhile..only after running during hot weather i/e leave work during the day stop to eat lunch and truck will turn over but difficult to start__________________________
Demographics: tell us about your truck and your ambient conditions:
- Year: 1996______
- Truck model and class (ie: c2500) k2500_________
- Automatic or Standard automatic__________
- Mileage: (indicate miles or km) __240,000k_______
- Replaced parts and mods (IP, PMD, chip/PCM, TM, injectors etc) _ssdiesel pmd module 2/3 years ago________
- Model: ‘S’ or ‘F’ engine, NA or Turbo, EGR? __believe it is a s model it only has 1 solenoid for the wastegate actuator___________
- Ambient outside temp: (indicate *C or *F) __hot 90 plus degrees_______
- What fuel are you using? (#1 Diesel, #2 Diesel, Bio, VO, WVO, etc) __no.2_______
- What fuel additives are you using? _lucas diesel treatment once a month_______
- Where are you located? _mississippi___________
General maintenance: inspect and evaluate the condition of each. When were they last changed?
- Air filter _every other oil change 12000 miles________
- Fuel filter _every 4-5 months________
- CDR Valve? _last year________
- Coolant – last flushed/replaced at _hate to say but at least 4 years____________
- Oil – synthetic/regular, changed at _chevron/delo__________
- Batteries – state of charge, (matched set) replaced at _good 1 year old____________
- Battery cables and grounds (removed, cleaned and tightened): _yep_____________
- Glow Plugs - how many miles on them? originals______ What type? _____________
- Injectors - last changed at _originals______________
History: (Describe how the problem first appeared.)
- What were you doing when it happened? __n/a____________
- How was the truck running fine before this problem appeared? _yes___________
- Has this problem ever happened before? ___yes____________________
- Describe any related factors that might be part of the problem. ______________
- Have you checked for DTC (Diagnostic Trouble Codes)? (Y.N) __no__ And? ________
Diagnostics:
1] Starting:
1a] Does the engine start? _yes but takes a while______
1b] Does the engine crank over? _yes_______
1c] Are your batteries fully charged? _yes________
1d] Have you removed, cleaned, and tightened all battery connections? ____yes____
1e] Does your Wait to Start light come on for a time? How long? _yes about 5 seconds________
1f] Does your glow plug light come on? __n/a_______ For how long? _________
1g] Do you see smoke from the exhaust while cranking? What color? ________
1h] Does the Service Engine Light Glow during Start/bulb check? ________
2] Fuel Issues (if not running):
2a] Can you hear your lift pump working? ____________
2b] Do you get a steady flow of fuel from the water drain (T-handle) ? _________
2c] Loosen the inlet line from the IP – is fuel coming out (Lift Pump on)? ___________
2d] Loosen an injector line and crank the engine - does fuel come out? _________
2e] Do you hear a vacuum (hiss) when you remove the fuel cap? __yes_________
3] PMD / IP Issues
3a] Location of PMD (on pump, on intake, remote mounted) _on top of manifold cover_________
3b] Condition of Extension harness (if used) Vendor or Homemade? _vendor________
3c] Condition of grounds / ground wires to IP / PMD. Check Harness. _________
3d] PMD Make: _ssdiesel__________
3e] PMD Age: ____3 years_________
4] Stalling Issues
4a] Do you experience stalling only when hot? _very hard to start___________
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 (boost, EGT) ? ___________
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 (OEM)? vacum ______________
7] Temperature-related Issues:
7a] Single or dual thermostats? _single___________
7b] Have you replaced them lately? Manufacturer of replacements? _________
7c] Have you pulled and cleaned Radiator and coolers lately? _no___________
7d] Have you replaced the fan clutch? Manufacturer of replacement? no________
7e] (winter) Have you tested your antifreeze? Good to what temp? __________
7f] (winter) Are you using a winter grille cover? ___________
List and describe any other factors which are not addressed in this checklist. We can’t see, hear, smell, or touch your truck, so the more descriptive information you can give, the more likely it is that somebody can assist you.
__Basically cranks runs fine all of the time in cooler weather..seems after summer hits 90 degrees or so..will crank fine in the mornings, but if i run it for a while and need to stop and turn off engine, it is very hard to start...will turn over and over and over then will catch and crank...its been doing this for a few years, but i only drive it to work and just never got a firm diagnosis... put a new pmd on and that didnt seem to help much if any... lift pump was replaced last year on the frame....could it be the OPS switch? I know I need new injectors and plugs just as a preventative thing....truck runs great and pretty good pep for a truck 14 years old...just this cranking issue after running it in hot weather...no diesel peeps here except dealers and really dont feel like giving them my money when I could possibly fix myself...just need a firm diagnosis.._______________________________
Demographics: tell us about your truck and your ambient conditions:
- Year: 1996______
- Truck model and class (ie: c2500) k2500_________
- Automatic or Standard automatic__________
- Mileage: (indicate miles or km) __240,000k_______
- Replaced parts and mods (IP, PMD, chip/PCM, TM, injectors etc) _ssdiesel pmd module 2/3 years ago________
- Model: ‘S’ or ‘F’ engine, NA or Turbo, EGR? __believe it is a s model it only has 1 solenoid for the wastegate actuator___________
- Ambient outside temp: (indicate *C or *F) __hot 90 plus degrees_______
- What fuel are you using? (#1 Diesel, #2 Diesel, Bio, VO, WVO, etc) __no.2_______
- What fuel additives are you using? _lucas diesel treatment once a month_______
- Where are you located? _mississippi___________
General maintenance: inspect and evaluate the condition of each. When were they last changed?
- Air filter _every other oil change 12000 miles________
- Fuel filter _every 4-5 months________
- CDR Valve? _last year________
- Coolant – last flushed/replaced at _hate to say but at least 4 years____________
- Oil – synthetic/regular, changed at _chevron/delo__________
- Batteries – state of charge, (matched set) replaced at _good 1 year old____________
- Battery cables and grounds (removed, cleaned and tightened): _yep_____________
- Glow Plugs - how many miles on them? originals______ What type? _____________
- Injectors - last changed at _originals______________
History: (Describe how the problem first appeared.)
- What were you doing when it happened? __n/a____________
- How was the truck running fine before this problem appeared? _yes___________
- Has this problem ever happened before? ___yes____________________
- Describe any related factors that might be part of the problem. ______________
- Have you checked for DTC (Diagnostic Trouble Codes)? (Y.N) __no__ And? ________
Diagnostics:
1] Starting:
1a] Does the engine start? _yes but takes a while______
1b] Does the engine crank over? _yes_______
1c] Are your batteries fully charged? _yes________
1d] Have you removed, cleaned, and tightened all battery connections? ____yes____
1e] Does your Wait to Start light come on for a time? How long? _yes about 5 seconds________
1f] Does your glow plug light come on? __n/a_______ For how long? _________
1g] Do you see smoke from the exhaust while cranking? What color? ________
1h] Does the Service Engine Light Glow during Start/bulb check? ________
2] Fuel Issues (if not running):
2a] Can you hear your lift pump working? ____________
2b] Do you get a steady flow of fuel from the water drain (T-handle) ? _________
2c] Loosen the inlet line from the IP – is fuel coming out (Lift Pump on)? ___________
2d] Loosen an injector line and crank the engine - does fuel come out? _________
2e] Do you hear a vacuum (hiss) when you remove the fuel cap? __yes_________
3] PMD / IP Issues
3a] Location of PMD (on pump, on intake, remote mounted) _on top of manifold cover_________
3b] Condition of Extension harness (if used) Vendor or Homemade? _vendor________
3c] Condition of grounds / ground wires to IP / PMD. Check Harness. _________
3d] PMD Make: _ssdiesel__________
3e] PMD Age: ____3 years_________
4] Stalling Issues
4a] Do you experience stalling only when hot? _very hard to start___________
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 (boost, EGT) ? ___________
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 (OEM)? vacum ______________
7] Temperature-related Issues:
7a] Single or dual thermostats? _single___________
7b] Have you replaced them lately? Manufacturer of replacements? _________
7c] Have you pulled and cleaned Radiator and coolers lately? _no___________
7d] Have you replaced the fan clutch? Manufacturer of replacement? no________
7e] (winter) Have you tested your antifreeze? Good to what temp? __________
7f] (winter) Are you using a winter grille cover? ___________
List and describe any other factors which are not addressed in this checklist. We can’t see, hear, smell, or touch your truck, so the more descriptive information you can give, the more likely it is that somebody can assist you.
__Basically cranks runs fine all of the time in cooler weather..seems after summer hits 90 degrees or so..will crank fine in the mornings, but if i run it for a while and need to stop and turn off engine, it is very hard to start...will turn over and over and over then will catch and crank...its been doing this for a few years, but i only drive it to work and just never got a firm diagnosis... put a new pmd on and that didnt seem to help much if any... lift pump was replaced last year on the frame....could it be the OPS switch? I know I need new injectors and plugs just as a preventative thing....truck runs great and pretty good pep for a truck 14 years old...just this cranking issue after running it in hot weather...no diesel peeps here except dealers and really dont feel like giving them my money when I could possibly fix myself...just need a firm diagnosis.._______________________________
