James Blakely

James Blakely

Member
Hi guys
I had my 2004 discovery TD5 Landmark re chassis done and after a week of it running with no problem, it has started to have a hard start and I think a misfire. so far I have changed the fuel pump, fuel filter, the fuel filter housing was changed about a year ago for a new one, changed number 5 injector nanocom was reading + 35 all injectors are now between -4 to +5, changed the FPR for a new one as it had a very small leak, Injector seals and washers, injector harness, all fuses and relays, took fuse box from engine bay and put dielectric grease on all the connections. I'm not getting any faults on the nanocom. I just done the FPR today and the purge cycle twice and it was still hard to start, I'm going to wait till tomorrow morning and try a cold start, any help with this would be very gratefully appreciated.

cheers
Stewart.
 
Hi Stewart
You appear to have covered most probable faults although that is no guarantee you've cured them. The other possible fault for poor starting that springs to mind is the starter motor. There is a known problem of the starter motor where although cranking is braking down electrically and interfering with the crank sensor signal. There are aftermarket shielded cables available to help cure this known gremlin.
 
The other known fault, well one of them, is that if your batt isn't up to snuff it might crank over but still not fire as the ECM doesn't see enough voltage.
Try jumping it from another car, and/or get your batt properly tested.
Frustrating, I know.
 
Thanks for the reply's guys I changed the starter last year when I also had a starting problem that turned out to be fuel related the battery is also under a year old I changed that before winter last year. I have a second hand fuse box that looks better than the last one that I replaced, when I replace that today I will check the red plug again. Again guys thanks for all your help, I'm really getting to my wits end on this after the thousands I have spent on this now. could I change the ECU from my 2004 auto to my 2004 manual just to eliminate this as well ?
 
Well guys tried starting it this morning still three turns before it will start very roughly and then settles down any thoughts?

Stewart.
 
I'm beginning to wonder, as it started after you had the chassis work done, whether one or more of the fuel pipes has developed a tiny crack or something. There is a known place where one or more rub on chassis rails, outa sight.
 
Yes I was thinking that, the thing is I changed the green pipe just before the chassis swap was done so I had a check of said pipe and it seems OK.

Thanks for the reply.

Stewart.
 
James Blakely said:
Yes I was thinking that, the thing is I changed the green pipe just before the chassis swap was done so I had a check of said pipe and it seems OK.

Thanks for the reply.

Stewart.
Click to expand...
Always worth a look again, the damage could have been done after you swapped it, or to one of the others.
The bloke who welded mine up and had to take the tank out, obvs, managed somehow to damage the tank cos when I got it back there was white numbers painted in where the fuel pump sits, and this guy is both good and decent.
He did tell me that he had had trouble getting the tank out, and he didn't mention a replacement nor did he charge me for it.
Luckily he has a mountain of spares!
 
The thing is though it drove faultlessly for a week after the galv chassis was fitted, but I will go out now and give the pipes at the tank and crossmember an other check and report back cheers for the help.
 
OK just checked the fuel lines, no leaking all dry none are rubbing or kinked.
I'm running out of options now, I have ordered new genuine seals and washers for the injectors and will redo these just in case I made a cockup the last time and a crank sensor.
After this I'm at a loss
 
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