Slight 'hiccup' on acceleration
Slight 'hiccup' on acceleration
Hi guys,
over the past few days i've developed what i can only call a 'hiccup' under acceleration... it happens at between 1700 - 1800 rpm in 2nd, 3rd 4th, 5th and nowhere else!? like a 'jerk' then its gone...
it still pulls and feels fine but cant explain why it would all of a sudden start this?
scott
over the past few days i've developed what i can only call a 'hiccup' under acceleration... it happens at between 1700 - 1800 rpm in 2nd, 3rd 4th, 5th and nowhere else!? like a 'jerk' then its gone...
it still pulls and feels fine but cant explain why it would all of a sudden start this?
scott
- Josh_PoloGTi
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I was gonna suggest checking that your not getting any arcing across the insulation on one of your plugs. I had that on an old car but it was an occaisonal 'jerk' not at just one point in the rev range.
Isn't 1700rpm a little slow to be booting it? (i thought it puts a bit of stress on the engine?) ...but then if it wasnt doing it before... ?
Isn't 1700rpm a little slow to be booting it? (i thought it puts a bit of stress on the engine?) ...but then if it wasnt doing it before... ?
- Josh_PoloGTi
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And the survey says??
Working on what's gone wrong with mine in the past, this sounds like either HT or cambelt..
see http://www.tigerstyle.co.uk/poloforum/v ... hp?t=10681
Hope it's the HTs!
Edit - A good way to check your HTs aren't arcing is to pour water over them, you'll soon find out if they are or not! It's what the garage did to diagnose mine!
Working on what's gone wrong with mine in the past, this sounds like either HT or cambelt..
see http://www.tigerstyle.co.uk/poloforum/v ... hp?t=10681
Hope it's the HTs!
Edit - A good way to check your HTs aren't arcing is to pour water over them, you'll soon find out if they are or not! It's what the garage did to diagnose mine!
acceleration jerk
yeah that happen to me too. only notice it today after driving for 4hrs in london. seems to me is happening when the car is warm. between 1500-4500 rpm. the car just stop the response how it will normally do. so what kind of HT leads r recommended ? and spark plugs? how much am i expected to pay?
- Josh_PoloGTi
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HT Leads and spark plugs
apart from VW ht leads, can i put any other performance lead on the GTI? like Magnecor kv85? and do anyone know which spark plugs is best? i was looking at some Splitfire put cant find the right ones.
I have had a similar sort of problem for a while now, the problem will go away for a while (week or two) then re-appear with an occassional hiccup/jerk, I've plugged in the VAG-COM and apparently my (g28) speed sender unit has had it. Being repaired tomorrow so will let you know if this solves the problem!
If
If it is HT leads, then you should be able to see the arching if you take the air filter box cover off and watch the engine tick over in the dark - I mean in the garage - pitch black if possible. And, if the engine is damp, it will do this even more.
Senders tend to go wrong if sprayed with WD-40 or damp start. They do not like this stuff - it dissolves the carbon track (negative) that it uses to measure speed.
This sort of problem has normally been attributed to the cam belt tensioner in the past. Perhaps we need a re-think on what to check for first as Josh has listed, BEFORE changing cambelt tensioners.
Senders tend to go wrong if sprayed with WD-40 or damp start. They do not like this stuff - it dissolves the carbon track (negative) that it uses to measure speed.
This sort of problem has normally been attributed to the cam belt tensioner in the past. Perhaps we need a re-think on what to check for first as Josh has listed, BEFORE changing cambelt tensioners.