Year of Manufacture *: 2004 Engine Size and Code *: 2500 4d56 ( Optional ) Scanner Used: Delphi ds150e/SBB ( Optional) Fault Codes: boost pressure/temp sender
Hi folks could do with some guidance on this heap of …… (or a couple of pounds of C4) Vehicle came to us, headless after being at another garage for 12weeks. Apparently, it had overheated and stopped, causing cylinder head damage, but no evidence of piston or bore damage. New cylinder head fitted, timing belts, new glow plugs and temp senders. Timing spot on (re-checked just in case).
After initial bleed, vehicle started and ran for approx 10-15 seconds, then cut-out. Re-bleed, and it starts sporadically. (Fuel pressure from the injection pump seems to tail off during cranking). Glow plugs working as desired (power at the plugs too – I’m aware of the management relay faults). Stop solenoid has power (during cranking) but removed plunger to make sure it was not restricting flow into the pump. Small return valve on the bleed screw at the top of pump has been removed to make sure no air is being retained within the pump and refitted. I’ve tried an external gravity fed fuel source – no difference.
Runs on brake cleaner quite happily, so I’m beginning to think the injection pump is shot?? Are these coded or plug and play? I thought this may be immobiliser related, but no codes present in the immobiliser system (but I'd have thought no power to stop solenoid if that was the case)....
Hairless Tony!
(Fault codes only present because intercooler not currently fitted and temp sender code to confirm current codes are being read)
I have replaced a couple of these because of poor starting faults. The inner casting appears to wear and the vane pump will not generate any cavity pressure at cranking speed.
You could try a gentle tow start as long as you know all the mechanicals are in good order.(you don't want to mask a mechanical fault through towing)
The higher pump speed normally generates the correct cavity pressure if it is the pump at fault.
Regards markModern cars, Its all wizardry and witchcraft
Thanks Mark, not sure about that, I'd have thought the brake cleaner would spin it up fast enough to cover the pressure? Or would it? hmmmmm...... Goes off to find a tow rope!
Fixed #
Posted by Tony Ludford on July 26, 2011, 7:29 pm, in reply to "Re: Mitsubishi L200 4D56 Non-start" Message modified by board administrator July 27, 2011, 1:49 pm
Thanks Mark, but no tow rope required. Thought it unusual that it would only strike up, immediately after opening injector pipes, to bleed them. It would then run for between 3-15 seconds each time. Turns out, I had replaced the injector leak off washers (with holes in), with normal copper washers (without holes in), that were in the head set. DOH! Replaced them and it cracked up straight away. Thanks again.
Tony
Re: Fixed #
Posted by Mark Carter on July 26, 2011, 9:47 pm, in reply to "Re: Mitsubishi L200 4D56 Non-start - FIXED" Message modified by board administrator July 27, 2011, 1:50 pm