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Scorpio 2.5Tdi starting issue

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Scorpio 2.5Tdi starting issue
14 May 2009, 10:28 PM
Paulytrewq
Joined 14 May 2009
2 posts

I have a Scorpio 2.5Tdi 98 reg which I am finding difficult to start, the heater plugs are working fine and it appears to be getting fuel - when it finally starts there is a fair bit of smoke showing unburnt diesel. The car once started runs really well with loads of grunt.

If turned off and re-started when not fully warmed up it does start a bit easier, not perfectly though. If it is fully warmed i.e. after a run of more than 10 miles, and it is turned off it will not re-start. It spins over fine but doesn't fire!!!!

really annoyinig as the car would be spot on if only I could get it to start properly.

So far I've cleaned the injectors (with injector cleaner) this does seem to have made it run a little better but has not affected the starting issue. I've changed the fuel filter and checked for leaks of which there were only leaks on the leak back pipes which I have now replaced. I've checked all the terminals for the sensors I can find and none of them are corroded and all seem to be ok. I've chenged the battery as it does start a little easier when it is being jump started - this I have now put down to the fact that it spins faster from the higher voltage available from the two batteries (and the fact that the jump car is running so putting out a slightly higher voltage anyway...

Any help or ideas would be greatfully received.

Cheers
Paul

Discussion Archived

Scorpio 2.5Tdi starting issue
19 June 2009, 9:21 PM
carlos
Joined 2 Jun 2007
142 posts

how do you know heater plugs are ok have you phisically removed them and tested them by connecting to a battery
Discussion Archived

Scorpio 2.5Tdi starting issue
19 June 2009, 9:28 PM
Paulytrewq
Joined 14 May 2009
2 posts

I tested the resistance of the plugs indiviually all the same ~ 1.5ohms which shows the heaters haven't burnt out or shorted.
Discussion Archived

Scorpio 2.5Tdi starting issue
19 June 2009, 9:56 PM
carlos
Joined 2 Jun 2007
142 posts

i have been caught out this way myself there is no substitution for removing and what i call bench testing trust me if you phisically test glow plugs then you can be 100% sure there working cos this sounds like a classic case of maybe 1 or 2 plugs only working if it was any more youd be lucky if it ever started also have you tested for voltage at glow plugs cos just because glow plug light comes on doesnt mean glow plugs do a lot of systems specially ford use a fuse between relay and glow plugs so in effect your glow light can work as normal but if fuse blown or bad connection no voltage will ever reach glow plugs hope this helps regards carlos
Discussion Archived

Messages 1 to 4 of 4.

 

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