16v power loss, jerking .....

[walchy01]

Hi all

Any suggestions on why the valver is running Iffy, put your foot down and it's jerky when accelerating, even when warm no change....powers there then it's not then it is, hard to describe but bloody annoying

It does tick over horrible also from cold and usually dies unless you keep the power on, soon as it gets to 50 degrees on temp ticks over fine, but still same juddering issue....

Thank you

[The Mighty Elvi]

When did you last thet the timing/fuel mixture/ checked?

How old is the fuel filter?

could be many things.

[walchy01]

Timing done last year, fuel mixture and fuel filter not replaced or checked....

[The Mighty Elvi]

Sounds like an intermittent fuel starvation issue.

could be either pump/blocked filter.

As you don't know the age of the filter, I would change that regardless.  Simple job, but a PITA is the union joints are super tight.

[walchy01]

Right I'm init...

Thanks

[The Mighty Elvi]

Once you've changed the fuel filter and it is still not right, use the search function.

Then have a read of the set up guide ^

By a process of illimination / and doing a good service on the car you should get it running right.  From my own experience I had a leak in one of the joints on the air intake pipes.  This caused a big loss in power.

Have a read of this:

http://www.golfgtiforum.co.uk/index.php?topic=97375.0


And others.

http://golfgtiguides.co.uk/guides/clean-mk2-golf-idle-valve-isv/

[pigbladder]

does the rev counter go beserk when its jerking....if so id try the hall sender

[walchy01]

No rev counter stays as it should, are we putting our money on a fuel issue/pump/filter? :embarassed:

Thanks

[bodga]

Could be your HT leads or dizzy cap breaking down, have you pulled your spark plugs out? are they sooty? or wet? could give you a clue as to which injector/lead is breaking down.

Go out and start it up now its dark! and look for any arcing around the leads and dizzy cap

[walchy01]

Right,changed king lead and it's stopped sparking, so one thing less to fix...
Looking like time to check  fuel bits out...