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[Jelen323]

Hi all,

I have recently purchased Omega 2,5tds '97. estate for cheap price. It is in good condition for its age but have some problems that must be solved

One of the problems is warm start.

I have changed fuel pump in tank (old one had no pressure at all), but the problem still resists. Battery in car is 100aH one year old, but somehow in little poor condition. It seems like the engine is to heavy for it, does not have real start power as it should be with almost new battery.

When engine is cold, it starts ok, but every next ignition after it is problem. When finally starts up it throws much black smoke from exaust. So I conclude it has too much diesel in fuel mixture.

Under the boost the car is pulling really nice, but when standing from exaust smells like fuel isnt burned till end and blue smoke can be seen (in small amount)

I hope that problem isnt in high pressure fuel pump, that would cost me arround 1000 GBP here in CRO, almost amount I paid for the whole car

In next days will try to fit new battery 100aH with bigger start ignition (this battery in my car have 750aH)


Would be very thankfull if someone can help me. I drove every kind of cars in my life, from brand new to much more expensive then this one but Omega is really somehow special and would be glad to bring her to good condition and enjoy in it

B Rgd,

Ivan

[Seth]

Common problem on the TDs

Against all odds, I've successfully cured two by fitting a new TD-specific battery.
(One of the problematic cars had just been fitted with a brand-new injection pump at over £1200)

The smoke is probably a build-up of unburnt fuel during prolonged pre-start cranking.

[relluf]

I agree with Seth!

Having had this warm start problem ,changing to a proper td spec battery works well.

I ended up buying the GM branded battery from Vauxhall and it now starts with no issues. I cannot really explain it but it works(or did for me).

[Jelen323]

Thanks alot guys, great to read that!

I have found battery in a local car part store with 110aH and 1000aH starting ignition. Will pick it up in next few days, and hope it will be proper demand for this lazy grandpa 

[Seth]

The geenuine battery should be an 85ah jobbie.
Vx part no is 93197903.

I agree with Seth!

Having had this warm start problem ,changing to a proper td spec battery works well.

I ended up buying the GM branded battery from Vauxhall and it now starts with no issues. I cannot really explain it but it works(or did for me).

I have a [proven, it would seem] theory .. especially since both cars that've been cured are still starting/running impeccably - several years hence

[Rifai]

Hi,

sorry to intervene but I have the same car and user manual says car should have 66 AMPh battery.

no issues if I fit a higher ah one?

[Jelen323]

Since I've changed battery my problems seems to be solved. At least I thought so

Engine starts much easier and it does not crank any more 100 times till finally start up. I noticed fuel leaking on high pressure pump, and changed valve on it. Leaking has stoped but fuel consumption is very high. About 9-10 liters of diesel on 100km

With fall of degrees these days we have some fresh problems with my Maggie LOL

Again engine wont start as it should be. It revs lots of times till finally starts up. First few seconds only 3-4 cilinders are working.

All 6 heaters works fine and I always wait for the heater sound from engine bay before turning key on

Left it in Opel/Vauxall service today and tommorow morning I'm going there to see with mechanics what is wrong. Only hope engine compression will be fine. Otherwise scrapyard will become opinion

[Magwheels]

This engine is known for this issue.

http://www.ebay.co.uk/itm/HOT-STARTING-FIX-RANGE-ROVER-2-5-DT-DSE-P38-PROFESSIONAL-MICROPROCESSOR-UNIT-/301359943932?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item462a73d0fc

This might help.

[Diamond Black Geezer]

You'll get conflicting reports and opinions of that and similar kits on here. I'm not saying it's bad, but some will say don't touch it, it's a bodge other say 'yeah, works fine for me'

[Magwheels]

Must admit, I never needed one in the 9yrs I owned mine, but I knew they were around and that there was this problem.

I never looked into how or whether they worked to be honest.

[Jelen323]

Happy New Year to all OOF members!

Guys, how many is minimal compression ratio for 2.5 TDS?

My engine has compresion 24,26,26,28... and mechanic told me it is too low for normal start for these winter degrees

In autodata I have found information 22 bar is the lowest compression ration for this engine

High pressure fuel pump is in bad condition, is it possible this is the reason for the poor start at cold days?

best regards, Ivan
 

[TheBoy]

Warm start issues are usually fixed by changing the maps.

[4x4]

These might help