Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: Psychoca on 08 December 2009, 18:50:28
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My tractor has recently become a nightmare to start, hot or cold. It doesn't appear to matter what level of fuel I have in the tank either.
I can't feel any excess diesel around the injectors, so I don't feel it is the leak off hose.
Any ideas???
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i was having bother awhile ago. turned the key and it just made a whirring sound. in my case it was a starter motor. i took it out, cleaned & lubed it and no probs since. :y whats the symptoms with yours.
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The engine turns over, just not firing. Seems very much like fuel starvation and it certainly seems to start easier with the nose pointing downhill, well, as much as possible in the fens... lol...
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fuel heater loose on the top of the filter it needs tightenng would guess if you have tried everything else? see poor mpg post for details
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Well, I had to have the RAC out to me tonight as I couldn'y get the car started...
There was no fuel at the injectors at all and Easy Start wasn't starting it either.
So I guess it is down to the Electric Fuel Pump... I'll check the filter first just to confirm though...
Is there the same access panel on the estate as there is on the Saloon???
Thanks...
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Well, I had to have the RAC out to me tonight as I couldn'y get the car started...
There was no fuel at the injectors at all and Easy Start wasn't starting it either.
So I guess it is down to the Electric Fuel Pump... I'll check the filter first just to confirm though...
Is there the same access panel on the estate as there is on the Saloon???
Thanks...
Yes, access is the same.
If you look in 'Maintenance Guides' section, you'll find an excellent ditty there by Platty.
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Thank you... I just hope that it is the fuel pump now... I suspect it is...
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Well... I have had the fuel pump out and cleaned it... The plastic pipe was attached nicely and there wasn't too much gunk on the filter, but I cleaned it all anyway, checked it on the battery, where all appeared fine...
I refitted everything, bled the fuel back through and ran the car for a short while about 5-6 miles, enough to heat the engine nicely. I revved the engine hard and shut the engine off.. I immediately retried to start it and again it is not firing... Any ideas anyone???
Thanks...
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Remove the long brass banjo bolt at the top of the fuel filter. Be careful not to lose the two copper washers!
Turn the key to position 2, and you should now see a plentiful supply of diesel from the filter.
No fuel - the problem's aft of the filter.
Fuel - the problem's likely to be at the injection pump.
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Seems like you need the "hot start fix" £30 approx (fleabay). Done it to mine, now brill :y Search on here for "hot start fix" to get more details :y :y
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whens the last time you replaced the fuel filter. :question
I'd say air is getting in at or after the fuel filter.
check the rubber O ring at the top off the filter it could be burst.
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Fuel running nicely at the filter and I can clearly hear the Electric tank pump running nicely too... :)
I have a new filter to bung on it, except one of those copper seals jumped off the banjo bolt after I carefully forgot I put it in the box with the new filter for "safety" when I removed the new filter from the box.... :'( Hopefully now though, I am on to a winner...
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New Filter is now fitted and the fuel is bled through fully.. The engine still will not fire up from the key, only from a tow start... There is no performance loss even when accelerating very hard.
The engine Idles without any issues at around 600 rpm whihc is pretty much normal...
When the engine is shut off the engine will not fire up, even when immediately after stopping the engine...
I checked the filter preheater is tight, which it is, the fuel flows perfectly to the filter.
Just doesn't appear to have any fuel flow between the filter and the FIP...
Help...
Done paperclip test -
19 Incorrect RPM Signal
48 Battery Voltage Low
49 Glow Device General Error
64 Fuel Quantity Control Out of Range
92 Cruise Control Device Circuit Open Or Voltage High
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fuel heater loose on the top of the filter it needs tightenng would guess if you have tried everything else? see poor mpg post for details
Whilst we're on the subject, there's no fuse fitted to mine. Hadn't noticed until I was checking the fuses after BBQ'ing my ECU last monday evening.
Not an issue as it starts instantly, hot or cold. I was just curious as to whether it's fused along with something else on certain models.
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I checked the fuel heater when I did the filter, which seemed pretty tight, What I did notice though was there was very little flow at the injectors, I ended up having a tow start to "finalise" the bleed process. I checked everything when the engine was running and I am fairly sure that there is no air in the circuit... The only other thing I can try is to remove the Intake Manifold and make try to bleed the Injection pump, if it is possible...
Any Ideas???
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19 ??? poor starting ??? very much linked ??
If the system doesn't "know" the RPM/ crank position it can't "squirt" the fuel in at the right time ... perhaps under towing you are getting a higher RPM that the sensor now gives enough info ???
I would have guessed that towing RPM is much higher than starter motor RPM
Crank Sensor change ??
EDIT ... remember .. I know bugger all about diesels .. just guessing ... :)
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I am fairly sure that the 19 code is quite old, I know it came up when I paperclipped it earlier in the year... Assuming it is, Are they expensive?
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Assuming that the Crankshaft sensor is the problem, where is it located on the 2.5 TD and what is the easiest way of getting to it? If it makes life easier, I do have access to a set of hydraulic ramps.
Thanks.
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It's on the nearside of the block, near the starter motor, and points rearwards into the flywheel/bell-housing.
PM me your email address, and I'll forward a drawing to you.
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to get a battery voltage low the battery iirc must be 8.7volts or below much is way to low.battery neither knacked or you got a short circuit
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I have been offered the assitance of a known good Omega 2.5td, to remove the crank sensor to try in mine, to see if it will cure the problem. How critical is it to set the crankshaft to the markers???
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Just read-up the diagram that I sent .......
The pulse pick-up will 'sense' it's position relative to the pins on the dual-mass flywheel.
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I have confirmed that it is indeed the crank sensor that is failed, by seeing how she started immediately when I disconnected it. She started a few times, then when I left her for a while and tried again she waas troublesome...
I have managed to track a part down at autovaux, so should have the car running properly by the weekend.. :)
Thank you to everyone for your help, it is very much appreciated.
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I had the car back up on the ramps today and had a bit more of playabout and to get the part number of the fitted sensor. I noticed that the starter motor had lost a bolt and was loose.
I tightened the remaining bolt and put a temporary replacement bolt in, checked the car with the sensor connected and I had no problems starting the car. I left it for a while, tried it again a few times and still the is no problems starting the car.
Everything appears to be fine now, so I guess it was the starter corrupting the signal from the crank sensor...
Most wierd...
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I had the car back up on the ramps today and had a bit more of playabout and to get the part number of the fitted sensor. I noticed that the starter motor had lost a bolt and was loose.
I tightened the remaining bolt and put a temporary replacement bolt in, checked the car with the sensor connected and I had no problems starting the car. I left it for a while, tried it again a few times and still the is no problems starting the car.
Everything appears to be fine now, so I guess it was the starter corrupting the signal from the crank sensor...
Most wierd...
well done mate, and its not the first time ive heard of it albeit it was on a ford but few years ago, there was a big hoohaa about startrs corrupting crank sensors!! so i guess a loose starter could well produce back emf or something and interfrere with the signal as you say!! :y