did all xf's have efi from 1987 ?
the thing is, i see alot of xf's and they don't have the efi badge on them, was efi not a popular choice back in the day for some reason ?
There were XF EFI's right thru the years of them building them, optional on S-paks and opional on fairmont ghias. jun 86 is when they changed to unleaded and 87 is when the carby models got Electronic Spark Control.
The EFI XF's are pretty good if you only want to make small changes, eg: extractors, exhaust and a small cam, anything else will stuff up the ECU's control.
Having said that, mine was dual fuel, but now I ripped off the EFI stuff to get rid of the shit airbox, I used an early model XF carby distributor in place of the TFI one.
You're a hard man- they're not that bad - at least my '87 Ghia isn't. If you want to do things to it like cam & extractor - yeah - a carb is a much better option - but the XF EFI is a fairly simple setup. But there aren't many inputs for the computer to control mixture & spark advance so they're a pretty basic EFI setup.
The only real design flaw is the ISCV (which is more just a stupid idea to basically a non-event problem of erratic idle speed which the ISCV is generally more a contributor not a saviour) and the fact the crankcase has to be airtight to prevent crap idling too - so in general - crap idling. It's a great car to tow the boat.
My father blew the pipe right off the motor and it landed about 2 meters in front of the car. Good thing no one could see my underwear considering I was standing in front of the car.
If it's an LPG backfire it's nothing to do with the fact the car is EFI - it's usually a leaking LPG regulator. The intake manifold fills with LPG until the pressure equalises then you give it a crank & *BOOM* - bye bye airbox.
Yeah right a leaking LPG reg did not cause this. You can make any efi car do a LPG backfire by pumping the crap out of the accelerator. I have heard of people doing it on the factory installs too.
even, if i floor it, it used to blow it, once i had sumone under the bonnet, and it went ****en BANG! sounded like a gunshot... ahhh good old carby hehe
There must have been something wrong then, mine has been on gas since ive owned it (60000ks) and it has never missed a beat, starts easier on lpg than it does on petrol.
LPG cars are very sensitive to dodgy spark leads and the wrong spark plugs.
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