Starting issues - 2002 78 series Troopy 1HZ

Submitted: Monday, Mar 12, 2012 at 19:35
ThreadID: 92467 Views:12523 Replies:7 FollowUps:8
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My Troopy takes a very long time to start when its cold.
Starts better if I stop turning it over and turn off with the key and then and try again. It usually fires up 2nd or 3rd go, but if I leave it cranking it takes about 15 secs before it starts.

I suspected its glow plug related, so I have replaced glow plugs ... but its not much better.

I put a voltmeter on the glowplugs and I see 12v for about 8 secs, then I see nothing for about 4 secs, then I see 12v again (this is all before I turn it over).
The actual glow plug indicator on the dash goes out after about 2 secs when cold and 1 sec when warm (this is in Perth, so its not cold cold).

Is this normal ?
Its a 1HZ (non-turbo).
I'm not sure if its got 2 glow plug relays or just one (?)
Some articles say it should drop from 12v to about 6v, so perhaps I have a failed relay ?

I'm guessing thats my next point of investigation.

I did try connecting the glow plug rail straight off the battery and it started immediately, but I had already cranked it over to test the voltage ..so I need to do that test again when its totally cold.

Any ideas ?

I also think the injectors might need a service and it does stutter and bit sometimes when revving about 2,500 rpm .. but I'm trying to fix that with some injector cleaner before spending more $$ on it.




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