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New - '95 6.5 TD wont start after Head swap

J

jaszam0623

Jaszam
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I have a 1995 K2500(S-vin) P/u with 6.5l TD. It blew a head gasket. so I bought new heads and also swaped out the old water pump for the dual therm. neck and high flow water pump. All installed well no issues. I went to start it, she cranks perfectly but will not start. No sign of starting at all. just turning over, and over. I replaced Batteries, checked all vacuum lines and also replaced all glow plugs with delcos. she is getting fuel and glows light white hot(tested out of with a ground and they went "hot on" 8-10 secs. - check all wire connections and all grounds. I am lost!! please any help will be appreciated!!
 
You say she is getting fuel, but getting fuel where? Depending on what you had to take apart to do the head gasket you might still have air in the system. I would first crack an injector line or two and make sure the fuel is getting all the way to the injectors.
 
thanks

I had two injectors that were not tight enough at first and they were bleeding fuel I have since tightened them with same problem. I then crack one open on the other bank and they too push fuel out when cranking.
 
OK, I haven't flipped wrenches for a living for a while, and that was mostly gas stuff. The way I see it, if you have compression, and you have fuel coming out the injectors, and it is not firing, I would think it has to be the injection timing at this point.
 
Assuming it was running/starting okay prior to the head swap I'd look at last maintenance action, all IP lines connected in correct timing/firing order???, all electrical conns & gnds connected???, was IP removed, if so is it back in it's original timing location, rotated to driver side is advance time, pass side it retarded timing, any codes stored to alert timing is too far out of spec, air in totally drained system takes a good while to purge, and doesn't take much to get a no start condition, got solid 12V to the IP shutdown solenoid on top of IP, is that solenoid opening with application of 12v, good gnd with IP mated??? where is driver mounted on IP or remoted???,

OH BTW how about updating signature line so it's easy post to post to know what flavor of 6.5 ride we are dealing with
 
x2 what TD said. Make sure batts are good and strong and charged. Slow cranking combined with air in fuel and it will never start.
 
If he is having fuel coming out of the injectors, he either has a SEVERE compression loss or his timing is so back asswards that nothing will fire. ie. injecting at BDC.
 
As said before. You need to be sure it's actually pumping fuel from the injector lines. When I replaced a injection pump a while back, I had much the same trouble.

I would pop the injection line and it would squirt fuel, but as soon as it was reconnected it the fuel would stop. Turned out I had just enough fuel in the injector lines to spray out when there was no resistance(disconnected) but there was a large pocket of air behind said fuel. Popped the top off the injection pump and low and behold there was no fuel.

If you're absolutely sure it's pumping fuel then you may want to grab a compression tester(make sure it will handle over 450 psi) and ensure you actually have compression in those cylinders!
 
Primer said:
As said before. You need to be sure it's actually pumping fuel from the injector lines. When I replaced a injection pump a while back, I had much the same trouble.

I would pop the injection line and it would squirt fuel, but as soon as it was reconnected it the fuel would stop. Turned out I had just enough fuel in the injector lines to spray out when there was no resistance(disconnected) but there was a large pocket of air behind said fuel. Popped the top off the injection pump and low and behold there was no fuel.

If you're absolutely sure it's pumping fuel then you may want to grab a compression tester(make sure it will handle over 450 psi) and ensure you actually have compression in those cylinders!
Click to expand...

Funny had same problem with a case backhoe. It would pump fuel from injector lines but no start. Turned out the keyway was spun so as soon as it got resistance the ip wasn't turning. Not that it helps here.
 
Check your filter canister. Is it full? I would fill it up w/ fuel and fasten the cover. Then take off your fuel cap. Now try cranking. If there is air in the fuel system somewhere the air will work its way back to the tank quickly. Might take 4 or 5 cranking sessions.
 
Got a problem 94 6.5 td

Problem: Just picked my truck up from getting the heads rebuilt. Drove it 3.5 hours ( 60 % hiway / 40 backroads ) 100 miles ran fine, no problems,got home ( last leg of trip was on a bumpy 5 mile dirt rd. Turned it off after turbo cool down...will not start now, cranks fine, no glow plug indicator light ?, just cranks

Demographics: :

- Year: __1994____
- Truck model and class (ie: c2500) _2500 suburban________
- Automatic or Standard ___Auto_______
- Mileage: (indicate miles or km) _156,xxx________
- Replaced parts and mods (IP, PMD, chip/PCM, TM, injectors etc) ___________
- Model: ‘S’ or ‘F’ engine, NA or Turbo, EGR? ____f / turbo__________
- Ambient outside temp: (indicate *C or *F) __________
- What fuel are you using? (#1 Diesel, #2 Diesel, Bio, VO, WVO, etc) _#1____
- What fuel additives are you using? __None_________
- Where are you located? _____CO________

General maintenance: inspect and evaluate the condition of each. When were they last changed?
- Air filter ____2mon_____
- Fuel filter ___2mon______
- CDR Valve? ___?______
- Coolant – last flushed/replaced at ____2 weeks_________
- Oil – synthetic/regular, changed at __156.xxx_________
- Batteries – state of charge, (matched set) replaced at :were working
- Battery cables and grounds (removed, cleaned and tightened): _____Yesterday_________
- Glow Plugs - how many miles on them? ____60,000_____ What type? _____________
- Injectors - last changed at _______?________


History: (Describe how the problem first appeared.)
- What were you doing when it happened? __trying to start it____________
- How was the truck running fine before this problem appeared? __Just fine___________
- Has this problem ever happened before? ___No____________________
- Describe any related factors that might be part of the problem. After this happened. I checked batteries and found the neg. cable from 2nd ( passengerside) battery was not connected to ground
- Have you checked for DTC (Diagnostic Trouble Codes)? (Y.N) __n__ And? ________


Diagnostics:

1] Starting:
1a] Does the engine start? ___n______
1b] Does the engine crank over? ____y____
1c] Are your batteries fully charged? ___?______
1d] Have you removed, cleaned, and tightened all battery connections? _____y___
1e] Does your Wait to Start light come on for a time? How long? ___?______
1f] Does your glow plug light come on? ____n_____ For how long? _________
1g] Do you see smoke from the exhaust while cranking? What color? _Y, dark_______

2] Fuel Issues (if not running):
2a] Can you hear your lift pump working? ____n________
2b] Do you get a steady flow of fuel from the water drain (T-handle) ? ____y_____
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? ___________

3] PMD / IP Issues
3a] Location of PMD (on pump, on intake, remote mounted) ___intake________
3b] Condition of Extension harness (if used) Vendor or Homemade? ___good______
3c] Condition of grounds / ground wires to IP / PMD. Check Harness. _____good____
3d] PMD Make: ___________
3e] PMD Age: _____________

4] Stalling Issues
4a] Do you experience stalling only when hot? ____n________
4b] Does it stall under particular circumstances? (ie hit bump, or on accel) ____n__
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? __n_____
5c] Any white slime on oil surfaces (dipstick, CDR, oil Fill cap)? _____n_____
5d] Excessive white smoke from exhaust on cold start? ___n______
5e] Excessive black smoke from exhaust under hard acceleration? ____n______

6] Performance Issues
6a] Do you have gauges? _____n______
6b] Maximum boost under load? ____________
6c] Have you added a performance PCM (reflash) or Chip? ____n__________
6d] Have you changed exhaust / downpipe / crossover? _____n___________
6e] Wastegate – mechanical or vacuum? _____Mech_________

7] Temperature-related Issues:
7a] Single or dual thermostats? ______s______
7b] Have you replaced them lately? Manufacturer of replacements? __y, 100 miles , NAPA_______
7c] Have you pulled and cleaned Radiator and coolers lately? _____n_______
7d] Have you replaced the fan clutch? Manufacturer of replacement? ____n____
7e] (winter) Have you tested your antifreeze? Good to what temp? ___y_______
7f] (winter) Are you using a winter grille cover? ____n_______

List and describe any other factors which are not addressed in this checklist. .

_________________________________
 
Likely a failure in the Glow plug relay or a loose/bad connection.

I would say that possibly the connector came loose on the relay or the relay just failed.

Try a fresh relay and I'll bet it will work fine.

MGW
 
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