chevyCowboy
I might be crazy but i ain't dumb
my truck has beel felling gutless, ideling very ruff, and is acting the same as it was a bout a month ago when the OPS went out. i put a new genuine ac/delco replacement in and all problems got better.
I opened the water drain with truck running and no fuel came out and the truck died after about a min. i then pulled the plug from the OPS and jumped the LP with air bleeder open and it pumped fuel.
could the OPS be bad again or do i have other problems filter was changed about a month ago as well
he is the check list from the last time noting has changed other than a few more mile on the clock, and it has not stalled so i am leaving that part out
Demographics: tell us about your truck and your ambient conditions:
- Year: __93____
- Truck model and class (ie: c2500) ___k2500______
- Automatic or Standard ___standard_______
- Mileage: (indicate miles or km) __258000_______
- Replaced parts and mods (IP, PMD, chip/PCM, TM, injectors etc) ___wg wired shut, ho water pump.________
- Model: ‘S’ or ‘F’ engine, NA or Turbo, EGR? _____f_________
- Ambient outside temp: (indicate *C or *F) __80*-90* most days________
- What fuel are you using? (#1 Diesel, #2 Diesel, Bio, VO, WVO, etc) __#2_______
- What fuel additives are you using? ____none at the moment_______
- Where are you located? ___neb__________
General maintenance: inspect and evaluate the condition of each. When were they last changed?
- Air filter ___250K____3/09__
- Fuel filter ___258K___7/09___
- CDR Valve? ___229K__2/08____
- Coolant – last flushed/replaced at _______256K_4/09_____
- Oil – synthetic/regular, changed at ___rotella 15w40________
- Batteries – state of charge, (matched set) replaced at __replaced diehard platnum 3/09 good charge___________
- Battery cables and grounds (removed, cleaned and tightened): ____check 3/09__________
- Glow Plugs - how many miles on them? ___?______ What type? ______?_______
- Injectors - last changed at _____stock replacements 192K by po__________
History: (Describe how the problem first appeared.)
- What were you doing when it happened? ____accelerating__________
- How was the truck running fine before this problem appeared? ___good__________
- Has this problem ever happened before? _______no________________
- Describe any related factors that might be part of the problem. ______________
- Have you checked for DTC (Diagnostic Trouble Codes)? (Y.N) __N__ And? _______
Diagnostics:
1] Starting:
1a] Does the engine start? _yes________
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? ___dont have one______
1f] Does your glow plug light come on? ___8 sec or so______ For how long? _________
1g] Do you see smoke from the exhaust while cranking? What color? ________
2] Fuel Issues (if not running):
2a] Can you hear your lift pump working? ____no________
2b] Do you get a steady flow of fuel from the water drain (T-handle) ? ___no only a little steam not like it used to be when i drained the water______
2c] Loosen the inlet line from the IP – is fuel coming out (Lift Pump on)? ___some________
2d] Loosen an injector line and crank the engine - does fuel come out? __yes ______
2e] Do you hear a vacuum (hiss) when you remove the fuel cap? __yes_________
__________________
5] Running Issues
5a] On cold start, does upper rad hose get hard before engine warms up? ___no____
5b] Any bubbles or oil film in coolant overflow tank? __no_____
5c] Any white slime on oil surfaces (dipstick, CDR, oil Fill cap)? _____no_____
5d] Excessive white smoke from exhaust on cold start? __yes_______
5e] Excessive black smoke from exhaust under hard acceleration? ___normal_______
6] Performance Issues
6a] Do you have gauges? __yes egt and boost_________
6b] Maximum boost under load? __12-13__________
6c] Have you added a performance PCM (reflash) or Chip? _____na_________
6d] Have you changed exhaust / downpipe / crossover? __yes from ssd 3" dp 4" exs ______________
6e] Wastegate – mechanical or vacuum? ___stock but wired shut___________
7] Temperature-related Issues:
7a] Single or dual thermostats? _____single_______
7b] Have you replaced them lately? Manufacturer of replacements? __rep at 228500_______
7c] Have you pulled and cleaned Radiator and coolers lately? ___yes_________
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.
_________________________________
__________________
__________________
I opened the water drain with truck running and no fuel came out and the truck died after about a min. i then pulled the plug from the OPS and jumped the LP with air bleeder open and it pumped fuel.
could the OPS be bad again or do i have other problems filter was changed about a month ago as well
he is the check list from the last time noting has changed other than a few more mile on the clock, and it has not stalled so i am leaving that part out
Demographics: tell us about your truck and your ambient conditions:
- Year: __93____
- Truck model and class (ie: c2500) ___k2500______
- Automatic or Standard ___standard_______
- Mileage: (indicate miles or km) __258000_______
- Replaced parts and mods (IP, PMD, chip/PCM, TM, injectors etc) ___wg wired shut, ho water pump.________
- Model: ‘S’ or ‘F’ engine, NA or Turbo, EGR? _____f_________
- Ambient outside temp: (indicate *C or *F) __80*-90* most days________
- What fuel are you using? (#1 Diesel, #2 Diesel, Bio, VO, WVO, etc) __#2_______
- What fuel additives are you using? ____none at the moment_______
- Where are you located? ___neb__________
General maintenance: inspect and evaluate the condition of each. When were they last changed?
- Air filter ___250K____3/09__
- Fuel filter ___258K___7/09___
- CDR Valve? ___229K__2/08____
- Coolant – last flushed/replaced at _______256K_4/09_____
- Oil – synthetic/regular, changed at ___rotella 15w40________
- Batteries – state of charge, (matched set) replaced at __replaced diehard platnum 3/09 good charge___________
- Battery cables and grounds (removed, cleaned and tightened): ____check 3/09__________
- Glow Plugs - how many miles on them? ___?______ What type? ______?_______
- Injectors - last changed at _____stock replacements 192K by po__________
History: (Describe how the problem first appeared.)
- What were you doing when it happened? ____accelerating__________
- How was the truck running fine before this problem appeared? ___good__________
- Has this problem ever happened before? _______no________________
- Describe any related factors that might be part of the problem. ______________
- Have you checked for DTC (Diagnostic Trouble Codes)? (Y.N) __N__ And? _______
Diagnostics:
1] Starting:
1a] Does the engine start? _yes________
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? ___dont have one______
1f] Does your glow plug light come on? ___8 sec or so______ For how long? _________
1g] Do you see smoke from the exhaust while cranking? What color? ________
2] Fuel Issues (if not running):
2a] Can you hear your lift pump working? ____no________
2b] Do you get a steady flow of fuel from the water drain (T-handle) ? ___no only a little steam not like it used to be when i drained the water______
2c] Loosen the inlet line from the IP – is fuel coming out (Lift Pump on)? ___some________
2d] Loosen an injector line and crank the engine - does fuel come out? __yes ______
2e] Do you hear a vacuum (hiss) when you remove the fuel cap? __yes_________
__________________
5] Running Issues
5a] On cold start, does upper rad hose get hard before engine warms up? ___no____
5b] Any bubbles or oil film in coolant overflow tank? __no_____
5c] Any white slime on oil surfaces (dipstick, CDR, oil Fill cap)? _____no_____
5d] Excessive white smoke from exhaust on cold start? __yes_______
5e] Excessive black smoke from exhaust under hard acceleration? ___normal_______
6] Performance Issues
6a] Do you have gauges? __yes egt and boost_________
6b] Maximum boost under load? __12-13__________
6c] Have you added a performance PCM (reflash) or Chip? _____na_________
6d] Have you changed exhaust / downpipe / crossover? __yes from ssd 3" dp 4" exs ______________
6e] Wastegate – mechanical or vacuum? ___stock but wired shut___________
7] Temperature-related Issues:
7a] Single or dual thermostats? _____single_______
7b] Have you replaced them lately? Manufacturer of replacements? __rep at 228500_______
7c] Have you pulled and cleaned Radiator and coolers lately? ___yes_________
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.
_________________________________
__________________
__________________
