New IP and still no fuel

[dave_]

Hello new to this site

Once upon a time....

Back in May this year i bought a 1995 chevy suburban 6.5 which was a non runner and had been for four years! Previous owner said it needed a new injection pump

Not knowing alot about these as im from england i researched info on how to install a ds4 IP. firstly i purchased a remanufactured IP from america with a 1 year warranty that was fully tested with all new electrical parts replaced and brand new pmd. After installation / timing etc with scan tool thinking anything was running smooth the truck then frequently started stalling and showing codes 18, 35, 54! after many weeks of stalling and arse twitching driving discovered lift pump / oil pressure switch was bad causing ip to overheat due to lack of fuel maybe. after replacing both OPS and LP thinking we cured the problem, stalling still continued!

next step cleaned all known earths etc and put some 2 stroke oil in fuel and some diesel additive! stalling came less frequent, however eventully the truck would not start. we sent IP back for replacement under warranty thinking it may be the culprit

different ip unit was sent back to us, at present i have just installed the new reman IP, but still no fuel coming out of injection lines. tryed known working pmds, tryed everthing i did the first time i installed it

checked all fuses, relays, grounds. the ****er still wont run! i have a switch for on / off for LP and in dash fuel gauge showing 7 psi with lp running. theres plenty of fuel going in and out of ip. no error codes at present. also numerous electrical tests found on the web

Has any one got any advice please

david

 

[BigArt]

Welcome David. You certainly at the right forum. Perhaps fill out the check list found here http://www.dieseltowingresource.com/showthread.php?t=6300 I'll leave it up to some of the experts you'll find on this forum.

Art

 

[dave_]

Problem: Explain your problem in concise language (ie: Cranks but won’t fire).

Cranks and cranks but still no fuel at injector lines
____________________________

Demographics: tell us about your truck and your ambient conditions:

- Year: ___1995_
- Truck model and class (ie: c2500) ___c1500______
- Automatic or Standard ______automatic____
- Mileage: (indicate miles or km) ___59000miles______
- Replaced parts and mods (IP, PMD, chip/PCM, TM, injectors etc)

IP, LP, batterys, OPS, PMD, alternator
___________
- Model: ‘S’ or ‘F’ engine, NA or Turbo, EGR? ____1GNGK16F7SJ366410
__________
- Ambient outside temp: (indicate *C or *F) ____18 *c______
- What fuel are you using? (#1 Diesel, #2 Diesel, Bio, VO, WVO, etc) _diesel________
- What fuel additives are you using? ___english diesel clean________
- Where are you located? ___________UK__

General maintenance: inspect and evaluate the condition of each. When were they last changed?
- Air filter _________Clean
- Fuel filter ______new___
- CDR Valve? _______checked / clean__
- Coolant – last flushed/replaced at _Recent____________
- Oil – synthetic/regular, changed at ____mobile 1 ow_______
- Batteries – state of charge, (matched set) replaced at ___new fully charged__________
- Battery cables and grounds (removed, cleaned and tightened): ___________battery terminals replaced, ground clean and tight___
- Glow Plugs - how many miles on them? ___stock / original ______ What type? _____________
- Injectors - last changed at ______stock / original_________


History: (Describe how the problem first appeared.)
- What were you doing when it happened? _____Stalling, which lead to no start_________
- How was the truck running fine before this problem appeared? intermitent problems_____________
- Has this problem ever happened before? __yes _____________________
- Describe any related factors that might be part of the problem. ________the previous owner said it was never right after filling up with red diesel______
- Have you checked for DTC (Diagnostic Trouble Codes)? (Y.N) ___no_ And? ________


Diagnostics:

1] Starting:
1a] Does the engine start? _______no__
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? _____5 secs____
1f] Does your glow plug light come on? _______yes__ For how long? _________5 secs
1g] Do you see smoke from the exhaust while cranking? What color? _no smoke_______
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? ___yes for sure_________
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? no_________
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 extension harness, but at the moment not is use and just on back of ip______
3b] Condition of Extension harness (if used) Vendor or Homemade? _homemade________
3c] Condition of grounds / ground wires to IP / PMD. Check Harness. _________
3d] PMD Make: ___stanadyne________
3e] PMD Age: ________new_____

4] Stalling Issues
4a] Do you experience stalling only when hot? ______did do______
4b] Does it stall under particular circumstances? (ie hit bump, or on accel) ______both and randomly
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? _______yes and triggered codes 18, 35, 54__
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? ___________service engine light did come on

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? ______no___
5e] Excessive black smoke from exhaust under hard acceleration? ___no_______

6] Performance Issues
6a] Do you have gauges (boost, EGT) ? _____just fuel pressure gauge______
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)? ______________

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? _________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? ___________

 

[buddy]

I would check your fuel tank for contaminants and lines for leaks. At least use the drain and pump out a litre or so and see what it looks like, any water bubbles at the bottom, and frothing, or floating particles?

Is there 7psi fuel pressure at the drain or the IP? If at the drain then the pressure could be less through the filter to the IP. Like there could be a dirty fuel filter if the pressure is checked only at the drain.

Can you eliminate your homemade FSD harness? Can it be removed or did you just splice in more wire? Can you do an ohm check from the FSD harness to the IP harness?

 

[Missy Good Wench]

On a 95 placing the trans in "D" and turning the key to start should get the Lift pump to operating.

As long as the key is held to start the lifr pump will fuction.

If no pump then you need to find out why.

If lift pump runs then run the lift pump (Tranny in D and key in start position)

Be sure you have fuel to the top of the IP (Inlet line)

Remove the glow plugs and spin the engine for about 30 seconds.
At this point you should see fuel mist at the glow plug holes spraying out while the engine is cranked.

If fuel present, install plugs, glow and start engine.

With engine running you should be able to open the fuel drain line at the front of the engine and have fuel come out the drain and the engine should run fine.
If the engine stalls or otherwise has issues while the drain is open the lift pump is at fault.

Always be sure the filter is in good order.

Make sure the fuel shut off solenoid clicks when key is turned on and off.

MGW

 

[dave_]

Fuel tank has been taking off, drained and cleaned! filled back up in clean diesel and all fuel lines are ok

Im not using pmd extension at the moment so that has been eliminated. the fuel guage is in the line between fuel filter and ip,

also done ohm check from pmd.

im really unsure whats wrong

 

[96 OILBURNER]

Is the FSO solenoid on the IP engaging when the ignition is turned on. It is the vertical cylinder on the front of the IP. I take it you have loosened a couple of injector lines to check for fuel at the injectors.

 

[dave_]

yes its working. tested it and got four injectors lines off

 

[ak diesel driver]

pull the glows like MGW suggested. It will spin over alot faster and not be fighting engine compression to prime.

 

[maximsafety]

Dave, did you ever get your Suburban running? If so, what was the problem??