Polo Parade Coupe 1994 AAU M reg starting problems

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Co2-UK
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Joined: Tue Mar 03, 2020 10:12 pm
Drives: 1994 Parade Coupe 1.0
Location: Hampshire

Polo Parade Coupe 1994 AAU M reg starting problems

Post by Co2-UK » Tue Mar 03, 2020 10:27 pm

I've got a 1994 m reg polo parade coupe that won't run. Engine code is AAU.

Here is what I know so far:

Vehicle started surging when driving - got worse over time.

Started losing power - accelerate when pulling away and lack of power, full throttle seemed to make it worst whereas slight throttle was better-ish. Revs would pick up and then it would accelerate as usual but with surging.

Vehicle cut out - not suddenly but wouldn't start again. Removed throttle body and cleaned it out. Replaced fuel filter, distributor cap and top vacuum pipe.

Seemed to work again for another couple of weeks but felt less powerful than usual, needed extra throttle when starting. Crappy idle when cold. Higher revs at idle after getting warm.

Lost power again not suddenly but as driving it got worse and now won't run for longer than a couple of seconds. Replaced ignition leads, spark plugs, distributor rotor arm. Removed throttle body again and cleaned out again. Still not working.

Any ideas on what to check/replace next?

Many thanks!

Gerardvierklauw98
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Re: Polo Parade Coupe 1994 AAU M reg starting problems

Post by Gerardvierklauw98 » Mon Mar 09, 2020 6:11 am

s**t man, one would hope the replacement of the sparkplugs would do the trick, but this is clearly more serious. Have you checked all cylinders? Are they all being used?

Co2-UK
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Posts: 2
Joined: Tue Mar 03, 2020 10:12 pm
Drives: 1994 Parade Coupe 1.0
Location: Hampshire

Re: Polo Parade Coupe 1994 AAU M reg starting problems

Post by Co2-UK » Mon Mar 09, 2020 8:42 pm

Checked compression and all readings are good.

It won't start with all spark plugs in (at least won't start and run for any length of time for than a few seconds) but if you remove one (any one), leave three in and then it will start and tick over.

Very weird indeed.

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