Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: 924boy on 07 March 2009, 19:37:58

Title: Hot start probs on 2.5 TD
Post by: 924boy on 07 March 2009, 19:37:58
Hi, my father-in-law has got a 2000 omega 2.5TD. It starts fine from cold but takes ages to fire up when warm. It runs fine when its got goin tho. The previous owner tried to sort it by puttin a new in-tank pump on it. And my father-in-law had someone out to it that did an upgrade or something on the ecu, but still not sorted.
any ideas???
Title: Re: Hot start probs on 2.5 TD
Post by: Loch View on 07 March 2009, 19:46:51
Porsche 924 owner?
Title: Re: Hot start probs on 2.5 TD
Post by: 924boy on 07 March 2009, 19:52:56
hi, yeah me and my dad have got a few 924's. fun hobby!
Title: Re: Hot start probs on 2.5 TD
Post by: Omegatoy on 07 March 2009, 19:54:12
next time its hot pour a bottle of cold water over the injector pump then try it,if it starts straight away betting its the fuel temp sender goosed!!! fairly common fault :y
Title: Re: Hot start probs on 2.5 TD
Post by: Loch View on 07 March 2009, 19:54:41
yeah they are! I've restored 2 of them the past 2 years  :y
Title: Re: Hot start probs on 2.5 TD
Post by: 924boy on 07 March 2009, 19:56:25
Quote
next time its hot pour a bottle of cold water over the injector pump then try it,if it starts straight away betting its the fuel temp sender goosed!!! fairly common fault :y


thanks, i'll give it a try!  :y
Title: Re: Hot start probs on 2.5 TD
Post by: 924boy on 07 March 2009, 19:56:49
Quote
yeah they are! I've restored 2 of them the past 2 years  :y

cool, what models are they?
Title: Re: Hot start probs on 2.5 TD
Post by: Loch View on 07 March 2009, 19:58:16
the plain 924 n/a
the last one had a full cgt body kit fitted..quite nice
what types do you have?
Title: Re: Hot start probs on 2.5 TD
Post by: 924boy on 07 March 2009, 20:04:28
we've got:

2x series1 turbos
1x series2 turbo
2x martini ltd. editions
1x 1988 lemans ltd. edition
1x 924s
8x standard 2.0 924's

i think thats all of em...

oh, and my dad has just bought a 2.5 944  :o
Title: Re: Hot start probs on 2.5 TD
Post by: Loch View on 07 March 2009, 20:05:37
holy %^$ :o

All road worthy?
Title: Re: Hot start probs on 2.5 TD
Post by: 924boy on 07 March 2009, 20:10:09
unfortunately no... the 944 is, 1 of the martinis is nearly there and the series 1 turbo is nearly ready for mot. The turbo will be goin up for sale once mot'd. We've got a container full of spares aswell, so if you d another 1 give me a shout if you need anything!
Title: Re: Hot start probs on 2.5 TD
Post by: Loch View on 07 March 2009, 20:11:22
Great  :y

pm sent
Title: Re: Hot start probs on 2.5 TD
Post by: richy08 on 07 March 2009, 21:33:50
i got the same problem with my 2.5td a ball ache . mine is holding between 2000 and 2500 revs then it justs lets me drive like i want i tried that water test no good my garage told me in tank fuel pump i am just changing that will let u no if that works  :-/ :-/RICHY

Title: Re: Hot start probs on 2.5 TD
Post by: richy08 on 07 March 2009, 21:55:20
AND FORGOT TO SAY A MATE OF MINE SAID IT COULD BE A STARTER RELAY DONT NO BUT I AM CHECKING MINE
Title: Re: Hot start probs on 2.5 TD
Post by: Loch View on 07 March 2009, 22:02:11
no need to SHOUT Richy ;D
Title: Re: Hot start probs on 2.5 TD
Post by: Seth on 07 March 2009, 22:17:30
Quote
AND FORGOT TO SAY A MATE OF MINE SAID IT COULD BE A STARTER RELAY DONT NO BUT I AM CHECKING MINE

It's certainly not the first time for me to say this ........

Lash out and fit a brand-new reputable battery OF THE CORRECT SPEC for a 2.5TD.
It's cured mine (even after a new injection pump at £1200 quid) nearly a year ago. Try doing this on yours and let us know.

Title: Re: Hot start probs on 2.5 TD
Post by: 924boy on 07 March 2009, 22:47:22
thanks for the info. :y let me no how you get on and i'll do the same!
Title: Re: Hot start probs on 2.5 TD
Post by: Seth on 07 March 2009, 22:57:51
Quote
thanks for the info. :y let me no how you get on and i'll do the same!

Read my post carefully mate - I've effected the cure!
Title: Re: Hot start probs on 2.5 TD
Post by: 924boy on 07 March 2009, 23:12:32
i really can't see it being the battery. it cranks over more than fast enough whether hot or cold, its definately not lacking power!
Title: Re: Hot start probs on 2.5 TD
Post by: berserkerboy on 08 March 2009, 08:00:14
Same problem with mine. Only happens badly when I'm below 20l in fuel tank. I,m sure it's a leak at the lift pump letting air in. I just make sure I'm fuelled over this until I fit an external pump when the warmer weather arrives: http://www.vegetableoildiesel.co.uk/forum/viewthread.php?tid=5464&page=1#pid46211
Title: Re: Hot start probs on 2.5 TD
Post by: Seth on 08 March 2009, 13:02:52
Quote
Same problem with mine. Only happens badly when I'm below 20l in fuel tank. I,m sure it's a leak at the lift pump letting air in. I just make sure I'm fuelled over this until I fit an external pump when the warmer weather arrives: http://www.vegetableoildiesel.co.uk/forum/viewthread.php?tid=5464&page=1#pid46211

Fuel level below the 20 litre mark is usually associated with the in-tank pump gubbins.
Often, it seems to be the ribbed transfer pipe that's at fault. This connects from the T-connector to the base of the swirl chamber. There may also be a build-up of crud at the bottom of the chamber, or on the fine mesh screen below the pump.

Title: Re: Hot start probs on 2.5 TD
Post by: Psychoca on 09 March 2009, 17:53:37
When I had the hot start problem on mine, it was the Starter, I changed the battery the previous year (in the autumn and cooler weather), but, as soon as the warmer weather returned last year, so did the hot start issue, this eventually lead to me burning out the starter.  When I replaced it (About 200 quid) it worked fine and has been fine ever since.

Title: Re: Hot start probs on 2.5 TD
Post by: berserkerboy on 10 March 2009, 08:03:45
Quote
Quote
Same problem with mine. Only happens badly when I'm below 20l in fuel tank. I,m sure it's a leak at the lift pump letting air in. I just make sure I'm fuelled over this until I fit an external pump when the warmer weather arrives: http://www.vegetableoildiesel.co.uk/forum/viewthread.php?tid=5464&page=1#pid46211

Fuel level below the 20 litre mark is usually associated with the in-tank pump gubbins.
Often, it seems to be the ribbed transfer pipe that's at fault. This connects from the T-connector to the base of the swirl chamber. There may also be a build-up of crud at the bottom of the chamber, or on the fine mesh screen below the pump.


I took mine apart and gave it a clean. Lost the little clip that lets you release the ribbed tube from the pump, so it is on for good now. Still the same problem, so air is getting in somewhere I think. This is not a major problem as far as I'm concerned. Still a good old bus!