2.7mpg, extreme poor running!!

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oh my god.

so i take it the chimp has been in there with a 4mm drill and whilst you were in bed has removed the injector, drilled straight through it and refitted it, thus giving you a very special way of emptying your fuel tank?

or is it all 4 injectors?!!

switched earth on these circuits remember so a chafed wire to earth would give you this frankly quite spectacular fault.
 
Its not the mark adams chimp, it was the ecu itself, something controlling the left bank of injectors had failed and caused the problem!

Noisy it's all four of the buggers!!, after changing my oil fluching out and re filling i still have ****e (6psi) oil pressure on a coldish engine and nasty misfiring and near total lack of power complete with nasty blue smoke...looks like its fooked the rings on that bank.



BOOOOOO***LLLLLLLLLLLOOOO***CCCCCCCCCKKKSSSSSSSS
 
Oil pressure wouldn't be affected by the rings though? Was the oil basically petrol when it came out?

Sorry to hear you have ended up with a disaster.

That much fuel much have washed those bores right out though :(
 
Mr Noisy said:
Oil pressure wouldn't be affected by the rings though? Was the oil basically petrol when it came out?

Sorry to hear you have ended up with a disaster.

That much fuel much have washed those bores right out though :(
Click to expand...

It might be if the ring are that fooked that petrol is getting past them straight away. The oil that came out was super thin and petroly. i can't be arsed to rebuild it in the winter.

Just seen some low mileage complete serp front ended x-bolted tvr 4.0 lumps on ebay
 
fix the fuel and crank it over with the plugs out tipping oil down the bores, it may seal again after some effort in this method
 
fett said:
fix the fuel and crank it over with the plugs out tipping oil down the bores, it may seal again after some effort in this method
Click to expand...

Just did a compression test, the bank that was ****ing out fuel showed 11.5 - 12 bar...the other bank that seems not to be spraying ANY fuel out the spark plug holes is ranging from 4-7 bar ( really fooked to just fooked )!!

Tried two ecu's, one modified and one standard, still the same.

I think the picture i posted was that bad because it was flooded badly, now if it's cranked over after letting the fuel evaporate off you get a misting from each hole not a great torrent. The right bank on the other hand still doesn't seem to be spraying any fuel, even when i put a spark plug in it and cranked it over it came out dry!

Could the fuel be escaping bast the bores so easily it's not being forced out the plug holes?
 
Mr Noisy said:
Oil pressure wouldn't be affected by the rings though? Was the oil basically petrol when it came out?

Sorry to hear you have ended up with a disaster.

That much fuel much have washed those bores right out though :(
Click to expand...
ive seen it burn pistons down one side ,to wear bores it would have to have been long term prblem
 
dirtydiscov8 said:
Just did a compression test, the bank that was ****ing out fuel showed 11.5 - 12 bar...the other bank that seems not to be spraying ANY fuel out the spark plug holes is ranging from 4-7 bar ( really fooked to just fooked )!!

Tried two ecu's, one modified and one standard, still the same.

I think the picture i posted was that bad because it was flooded badly, now if it's cranked over after letting the fuel evaporate off you get a misting from each hole not a great torrent. The right bank on the other hand still doesn't seem to be spraying any fuel, even when i put a spark plug in it and cranked it over it came out dry!

Could the fuel be escaping bast the bores so easily it's not being forced out the plug holes?
Click to expand...
one bank not opening the other open ?do they pulse
 
jamesmartin said:
one bank not opening the other open ?do they pulse
Click to expand...

Two ecu's with the same fault then?! I know the left bank is pulsing which is where i can petrol from the plug holes, the right hand bank i have yet to check. It can't be that the fuel isn't physically getting round to that half of the rail. Maybe the left bank is correct at spraying fuel from the plug holes and the right bank the fuel is passing past the rings before it gets compressed out the plug holes?
 
Still the issue of hardly any compression on the one side.

Are the injectors just held in place by the rail? If so i'll lift the rail and crank it then and se what happens
 
there is that ,but is this a total recent fail or something over time they may be connected or seperate issues,you need ram tube housing off really and apart from 4 bolts on rail yes the just pull out with rail but will need each injector prying up in turn
 
jamesmartin said:
there is that ,but is this a total recent fail or something over time they may be connected or seperate issues,you need ram tube housing off really and apart from 4 bolts on rail yes the just pull out with rail but will need each injector prying up in turn
Click to expand...

Seems like a very sudden recent fail ( working thursday fine then started up with this problem on thursday) saying that every now and then it would seem a little down on power so maybe it was running lean on the right bank and that's caused burnt out valves or something to cause the low compression.

The new oil i put in today seems to smell of petrol although the whole things stinks so it's hard to tell
 
it is as they do stink as std ,having a look is the only way forward noting what you find so you can build up the exact story ,ie whether fueling altered compression or seperate issues
 
I guess its time to take a head off then i guess?! But before that i'll check that the injectors are all firing by removing them and the rail. No point it rebuild/replacing the engine if the fueling caused the failure
 
exactly ,were i used to work i built 3 stripped v8 motors for the same customer ,1st one was sent out a month later asked to build a replacement and it was sent out agaiun similar complaint so 3rd engine was built ,but at same time customers first old unit came back stripped it one piston melted down one side about 15mm across then the first unit i built came back the same ,same piston, then 2nd the same obviously a very poor injector ,youd have thought fitters in holland would have noticed the replacement having same failure as original let alone again
 
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