Slightly Rough Power Delivery
Discussion
Afternoon all.
My Mk2.5 Sport seems to be running with a very slightly irregular power delivery.
If I accelerate I feel a very brief delay in thrust. I'm quite sure nobody has hidden a turbo under there anywhere.
Also while cruising along I can feel very slight rise and fall in power. This isn't a regular variation but just odd moments of less power. It's also not a huge change in power. I don't think my girlfriend even notices it when she's piloting it
Also, a recent development, on starting and for approx 20 seconds after, there's a high pitch squeeling noise that sounds like it's coming for a belt pulley. Does this need merely a bit of WD40 or is it a little more serious?
My Mk2.5 Sport seems to be running with a very slightly irregular power delivery.
If I accelerate I feel a very brief delay in thrust. I'm quite sure nobody has hidden a turbo under there anywhere.
Also while cruising along I can feel very slight rise and fall in power. This isn't a regular variation but just odd moments of less power. It's also not a huge change in power. I don't think my girlfriend even notices it when she's piloting it
Also, a recent development, on starting and for approx 20 seconds after, there's a high pitch squeeling noise that sounds like it's coming for a belt pulley. Does this need merely a bit of WD40 or is it a little more serious?
Ah yes, the dreaded fuel filter!
I refer you to my previous post...
http://www.pistonheads.com/gassing/topic.asp?h=0&a...
I've had several attempts at replacing this pesky thing! Conclusion is, I would have to remove the rear sub frame in order to take off the shield for the fuel filter!!! The sub frame block access to 3 out of 5 screws holding the shield in place. I don't fancy rippin ght shield off as it'll be the annoying rattle from under the car!
If you have any hints re removal of said shield i'm all ears.
Suspect it might be time to book it in for a filter change......
I refer you to my previous post...
http://www.pistonheads.com/gassing/topic.asp?h=0&a...
I've had several attempts at replacing this pesky thing! Conclusion is, I would have to remove the rear sub frame in order to take off the shield for the fuel filter!!! The sub frame block access to 3 out of 5 screws holding the shield in place. I don't fancy rippin ght shield off as it'll be the annoying rattle from under the car!
If you have any hints re removal of said shield i'm all ears.
Suspect it might be time to book it in for a filter change......
83AndyJ said:
Ah yes, the dreaded fuel filter!
I refer you to my previous post...
http://www.pistonheads.com/gassing/topic.asp?h=0&a...
I've had several attempts at replacing this pesky thing! Conclusion is, I would have to remove the rear sub frame in order to take off the shield for the fuel filter!!! The sub frame block access to 3 out of 5 screws holding the shield in place. I don't fancy rippin ght shield off as it'll be the annoying rattle from under the car!
If you have any hints re removal of said shield i'm all ears.
Suspect it might be time to book it in for a filter change......
Stop being such a girl :PI refer you to my previous post...
http://www.pistonheads.com/gassing/topic.asp?h=0&a...
I've had several attempts at replacing this pesky thing! Conclusion is, I would have to remove the rear sub frame in order to take off the shield for the fuel filter!!! The sub frame block access to 3 out of 5 screws holding the shield in place. I don't fancy rippin ght shield off as it'll be the annoying rattle from under the car!
If you have any hints re removal of said shield i'm all ears.
Suspect it might be time to book it in for a filter change......
Take what screws you can off, then just bend the shield out of the way, it's very malliable.
Seriously, you're making a proper mountain out of a molehill here.
EDIT: oh and the screws are simple plastic things, you can quite easily force them out if need be.
Richyvrlimited said:
Seriously, you're making a proper mountain out of a molehill here.
OT but - What he said - I've literally, today, just fitted a fuel filter on my Mk2. Pull out whichever fixings you can, then just rag the shield out the way, its only a bit of bendy plastic.
The clips make it nice and easy too compared to a Mk1.
Heres the best order - Remove filter completely from bracket, so its hanging on the fuel lines. Bracket nicely out the way.
Pull engine side off first.
Put clip from old filter - engine side, onto new filter - fuel tank side.
Then swap the fuel line over from the tank side, from old to new.
Then fit the clip from old filter - tank side, to new filter - engine side. Fit final pipe.
This minimizes spillage - the engine side has minimal drippage because you've de-pressurized the system first (you did, didnt you!? Pull the injector realy with engien running and it will stall with 0 fuel pressure).
The leakage from the tank side is now also minimized because the filter slows it down while it fills up. Winner winner chicken dinner. I only bathed myself in about a cup full of unleaded, which is better than my previous best.
Update,
after a little motivation from other forum folk, I once again raised the rear of my 5 and set about the fuel filter. Attempt 4!
With a little more bravery and brute force I got the shield nicely out of the way, got the filter out of its bracket and went to swith it with the new one.
I found what I now know to be "Duck Bill" clips on my fuel lines, for which I now know you need a specialist tool to remove them without damaging them.
So attempt 4 was a failure.
Definately considering booking it in uless anyone fancies lending me the tool?
after a little motivation from other forum folk, I once again raised the rear of my 5 and set about the fuel filter. Attempt 4!
With a little more bravery and brute force I got the shield nicely out of the way, got the filter out of its bracket and went to swith it with the new one.
I found what I now know to be "Duck Bill" clips on my fuel lines, for which I now know you need a specialist tool to remove them without damaging them.
So attempt 4 was a failure.
Definately considering booking it in uless anyone fancies lending me the tool?
83AndyJ said:
Got the 5 booked into a garage who'll replace the old filter with my new one for £15 to £20. Not bad!
Deal.
All going well with the filter, I may treat myself to some new leads too!
Ta
Here's a top tip. If replacing the leads yourself do them one at a time.Deal.
All going well with the filter, I may treat myself to some new leads too!
Ta
If you take them all off, and then think about fitting the new ones, you'll not know which plug to connect to which coil pack and have to look it up on the internet.
While "window shopping" on tinternet on Sunday I can accross this site:
www.dcperformance.co.uk
I haven't had the filter changed yet, that's next Saturday and will still go ahead. But in the intrest of smooth power delivery I was looking at HT's.
I have just ordered a set of Magnecor 8mm (2 leads for the Mk2.5 sport) for £23.42 plus £6.99 delivery!!! Not bad!
If anyone's in the market for some new HT's this price is an offer they are currently running and seems very good!
www.dcperformance.co.uk
I haven't had the filter changed yet, that's next Saturday and will still go ahead. But in the intrest of smooth power delivery I was looking at HT's.
I have just ordered a set of Magnecor 8mm (2 leads for the Mk2.5 sport) for £23.42 plus £6.99 delivery!!! Not bad!
If anyone's in the market for some new HT's this price is an offer they are currently running and seems very good!
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