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[Brikhead]

Good luck with it, Mate
Hope your efforts have sorted it for ya.

[Shark1e]

I fitted one of the "HOT FIX" gadgets to my tractor, and it really helps with starting once warmed up.....

http://www.ebay.co.uk/itm/Hot-Starting-Fix-BMW-Vauxhall-Opel-Omega-Diesel-M51-/370308699137?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item56381e5401

I would recommend fitting this, once you've solved the cold start problem (ie fuel supply pressure etc.)

Cheers, BP

ok thinking to my self aloud is this common in unchipped or is it just related to chipped tractors like ours?

where does that box fit? onto what etc? just trying to get my head round how this can work. unless its resetting some ecu values etc.

[Seth]

thanks mate, away till tomorz in mrs hot rod (ford KA) lol

changed the fuel filter the last week of june and if i'm honest has got worse since then urrrrrrmmmm :-?

what do you mean by returns to i.p?

thanks rob

Before delving any deeper, I'd suggest removing the fuel filter (and it's casing) as a complete unit from the car.

Grip the cast head portion in a vice and unscrew the filter.

Then unscrew the fuel heater boss, and check the rubber seal between it and the head portion.

Re-seat the seal correctly, then securely re-fit the fuel heater boss.

Fill a new filter with Comma Diesel Magic or Forte, then refit the complete unit to the car.

Give it another 'Italian Tune-up', see what happens, and report back!

 

[Shark1e]

ok fuel filter complete housing removed stripped and cleaned, re-assembled in workshop and refitted as complete unit.
started within 1/4 to 1/2 turn of engine, ran for a while to make sure all diesel pulled through and stopped engine, tried to start felt like 2 turns needed before fired. arrrrrrggggghhhhh.
left to cool down whilst at brother in laws doing a job, came out 1/2 turn and away we go, back home quick check and couple of turns again.

so this issue is deff related to once warmed.

any thought please.

thanks rob

[Shark1e]

just found this on a landrover site, sure it's my mates website lol oh well sure he won't mind it i borrow this below.

The original fault seems to me to be down to the programming by BMW - the fault is common to all BMW 2.5 Diesel applications not just Range Rover but Vauxhall Omega too. BMW programme the system so that when the engine is warm it gets NO preheat NO timing advance and NO extra fuel to help it start. Once the engines "get on a bit" like all of us they need a little help to start that BMW do not give - all the fix does is tell the engine it is cold whilst the relay is energised and that it is at the sensed temperature once the relay is de energised. The reason that Chipping the engine works is that the chip bypassess most of BMW's programming and tells the Pump to deliver the fuel you request with the accelerator regardless of what the German engineers think is just enough - that little bit of help - and of course better power delivery at differing profiles - remember BMW did not want the P38 to out perform the X5 they were working on at the same time......


now back to my thoughts, mines chipped so unless the chip is having a bitch fit then not sure where we are again lol
the guy i got the chip from offered to reflash it for me so may take him up on it.

[Omegatoy]

Hmm sounds like you have improved things then?

ok easy test to find out whether or not you have the hot start problem,

when you next go for a drive carry a bottle of water with you, when you stop and do whatever you have to do, when you try to start the car if it wont go immediatly cos its hot, pop bonnet and pour the cold water over the injection pump, then try to start, if you have hot start problem it will start almost immediately after the cold water treatment!! let us know how you get on

[Shark1e]

can do mate, read that also about using a funnel to channel all the water onto i.p

[Omegatoy]

can do mate, read that also about using a funnel to channel all the water onto i.p

yep go for it buddy, my new one has a bit of a strugggle starting when hot, it was awful on ordinary diesel, soon as i started using the super diesel in it it got a lot better, still not as good as me old one but liveable with! I may yet invest in the hotstart fix but the fuel temp sender can be changed with the pump in situ which wil also cure it, but i havent any new inoet gaskets here and i dont want to take the inlet off agin till i have to for another job!! so i live with it lol

[Seth]

Experienced the 'hot start' aggro even after having had a re-con injection pump fitted to our previous TD; at a cost of over 1200 quid.
 

Out of sheer frustration (and desperation!), I fitted a brand new (and TD-specific) battery - problem solved!
 
And that car is still going strong with another OOFer two years later!
 

I've since 'cured' another TD with the hot-start bug by fitting a brand new battery of the correct spec.

IME; if your cranking speed is even (ever so) slightly under positively whizzing the engine over, this is a successful fix.
Obviously, you need to check the alternator's output rate etc first.
See: http://www.omegaowners.com/forum/YaBB.pl?num=1225724099

Good luck

[Shark1e]

Experienced the 'hot start' aggro even after having had a re-con injection pump fitted to our previous TD; at a cost of over 1200 quid.
 

Out of sheer frustration (and desperation!), I fitted a brand new (and TD-specific) battery - problem solved!
 
And that car is still going strong with another OOFer two years later!
 

I've since 'cured' another TD with the hot-start bug by fitting a brand new battery of the correct spec.

IME; if your cranking speed is even (ever so) slightly under positively whizzing the engine over, this is a successful fix.
Obviously, you need to check the alternator's output rate etc first.
See: http://www.omegaowners.com/forum/YaBB.pl?num=1225724099

Good luck



 

good call no idea how long mines been on. but true it maybe be if the cca is shot then may be worth a shot. cold weather will soon tell how good the battery is. thanks.

also is the coolant sensor standard part number? anyone know the number or way of getting mine?

thanks

[Shark1e]

Just ordered the temp sensor from this link http://www.carpartsconnexion.com/vauxhall/partdetail.asp?dp=120722&f=Vauxhall&m=Any+model&y=Any+year&cat=0&pn=90510660&p=1&

£6.85 + £1.50 pp from newry ireland brand new. worth a try for that much

[osealy]

I think it's the( in pump) sensor that needs changing.

Hot start fix is just 2k ohm in series with pump sensor till engine fires,
Thin grey or grey blue IIRC.

[Seth]

Just ordered the temp sensor from this link http://www.carpartsconnexion.com/vauxhall/partdetail.asp?dp=120722&f=Vauxhall&m=Any+model&y=Any+year&cat=0&pn=90510660&p=1&

£6.85 + £1.50 pp from newry ireland brand new. worth a try for that much

Are you sure that you've got the right part here?

I'm pretty sure that you need a FUEL temp sensor ....... 

[Shark1e]

Vx gave the number. seller said got one spade terminal on it. the sensor i have on my pump has a small nut and bolt loop terminal on it. hope it  is right.

i have found the wire coming off it looks bent back over 90  degrees. and poss damaged so will have to check it out if i get the right sensor come

[Omegatoy]

fuel temperature sender is only available from good bosch agents,
pretty sure there was a how to on here but cant find it, it involves removing the top cover of the injection pump, to replace