Massive loss of power
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hey si sorry about not gettin back to you.
i'm sure its its air leakin in behind the vaf. or the vaf itself
i have a spare dizzy and vaf here.
a way to check it out is run the car and pull the vaf like stretch the pipe from the vaf to the intake and listen for changes
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If it is the dizzy I have a complete one for sale, but any of those pipes you have fitted if they let any sort of air in between the sensor and the inlet the cars loses all its power. take the top hose off and check for cracks.
The bonnet thing, get your car running and then open the bonnet in pitch black you will see blue sparks if you leads are leaking ( i have 2 sets of those for sale too)
or pull the leads out one at a time and check there are no cracks in the plastic that goes into the engine block, I had one go and that lost a lot of power because you basically lose a cylinder.If its none of those then I guess its distributor or sensor
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If you need the intake pipe I will have mine spare in about 3 days as Ive just bought all the bits for an induction setup
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you know that 4" pipe from the cat, is that just a straight out pipe or is it with a back box? that could be one of your problems, you want as little back pressure as possible but the wider the pipe the worse the bottom end is, when you in 2nd gear, what kind of revs are we talking as if its a straight out 4" pipe then thats surely waaaaaay bigger than youll ever need, thats like formula 1/truck area!
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had a good think on this one, hopefully this is right and might help you sort it. Have you set the throttle stop screw, manual says not to, but it is actually really important not to have it so its closed fully, you need a tiny gap, if you dont, then you will wear out the throttle body and have a permanent air leak into the plenum, its also necessary to set the base idle with it, manual says dont tamper, but its an adjustable screw, so its there to be adjusted, only reason they say not to is because the tps would also need to be adjusted to compensate for the new throttle flap adjustment. The AAS is only meant for fine tuning, though it also doesnt require that you adjust the TPS, which the TSS does, so thats why they say adjust it on the AAS because its a lot easier, but the AAS isnt designed to allow the required amount of air through to run the engine properly as the aas circuit is just an idle bypass for the throttle flap, as such the circuit isnt big enough in diamete to supply all the required air, so on engine breaking, ie changing down and the revs coming up due to speed, your plenum will get a massive hike in vacuum, so your brakes should become super powered at the lightest touch, but the engine has no air, causing it to suffocate until you open the throttle flap again, regassing the plenum and dispelling the vacuum, hence the delay and shitiness when it does come back online as the engine will have still been putting in fuel. surprised it didnt backfire!
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any progress?
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Hey lads,
thanks for all the input
I have been up to eyes in work and Im way for the rest of the week.
Plan is to first have a look at the air pipe work - look for anything looking straight at me.
My mechanic reckons its bad leads/dissy, like the lads were saying, is basically shorting in the lower torque bands so we'll have a goo over that
After that I think we'll look at fuel filter/pump, there is rust on my petrol filler cap so that could be it.
Just dying to get her back on track again. On the upside fitted HEL braided lines with good high temp fluid which was working well.
Can someone have a look at my engine bay, link below and confirm that it is a k8. I have receipt for any engine replacement showing something differrent. It makes no real difference to me but would be nice to know exactly what Im dealing with.
Is there anywhere were I can download the entire manual, anywhere I find it just has it on readable pages, looking to print one out
cheers
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your link hasnt worked mate, the manual is in the General discussion top link - FAQ Where to download a manual
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From pics in your work log, looks just like a 1.8 to me.
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Thats what Rob said too.
Makes no odds, just few people said different.
Cheers