[Mk2] [Turbo] Boost Issue

[willfinch36]

For a while I have been having an issue, not quite sure exactly what is the issue, but after about 10/15 miles of driving, the car only really uses about 3/4 of its proper power, if you reset the ecu, its ok for say another 10/15 miles.

Its had new NGK leads and plugs and oil change. but still no change.

It boosts up max on the guage, but still struggles and hesitates a bit.

No error codes.

[easty-5]

Get a boost gauge.

Have you dizzy cap and rotor arm?

[willfinch36]

Nope that was my next port of call though.

[easty-5]

I meant to say, "get a boost gauge to see what boost your running"

and

"Have you changed your dizzy cap and rotor arm" lol

Does the car actually missfire? Any warning lights on the dash?

[willfinch36]

Sorry yeah my next port of call was to change the rotar and dizzy, not exactly a misfire, just a slight hesitation nothing on dash

[MR John]

Check your ECU for codes easy as, as said dizzy rotor also ht leads could be leaking , good luck

[willfinch36]

as in my first post, no error codes

I will arrange for a new rotar arm, etc. and then report back.

[MR John]

as in my first post, no error codes

I will arrange for a new rotar arm, etc. and then report back.

Sorry dude was reading it on my I phone at work lol

[djpkins]

give the coil a once over before you spend any cash...and also check for boost pressure leaks with soapy water.

[willfinch36]

give the coil a once over before you spend any cash...and also check for boost pressure leaks with soapy water.

coil.. in what sense the "once over" ?

[willfinch36]

Which Distributor Cap and rotar arm do I need? I can only find the one for the up to 91 model and the one for past that seems to be 5mm ?? ( on Camskill)

Any Ideas?

[Bone]

You need this one...http://www.camskill.co.uk/products.php? ... 0s606p2719

[djpkins]

look for signs of water damage and cracked insulation...and work your way back to the plugs from each lead.

[willfinch36]

No water damage.....

plugs are fine

compression test = all cylinders 12.5

new HKS radiator cap....

but still appears to be losing water? coming out of the overflow?

But not overheating or anything.... and boost issue/missfire in 2nd gear sometimes.