New coil pack?

Hi all.
I have a 2002 2.0 gti,always used E5 but had to put £10 of E10 in last night,put £15 of E5 in today but with the E10 started to mis-fire and engine light flashing,been to the garage said without plugging it in could be the coil pack playing up,(fuel light was on when I put the E10 in),I might regret this but how much is a coil pack fitted please?
Thanks

 

It looks to be a DIY job and the part is about £35. There are a couple of useful utube vids.
Using E10 should not make your car behave like that so it must be a coincidence.

 

Thank you for a quick reply,I shall look on utube later,thought it was going to be more than that

 

Update,called the AA as didn't want to drive it to the garage mis-firing,AA bod plugged the computer in said mis-fire on cylinder 2.got to take the inlet manifold off to diagnose it then would open a can of worms and lots of £££££ to try and fix it.
Hate to think how much it is to fix or could end up scrapping it still got 4 months MOT aswell

 

Don’t go jumping to the worst conclusions. Misfire could be down to the coil pack.
I don’t get why you would need to take the manifold to diagnose before you have investigated the external possibilities.

 

AA man said he can't get to the coil pack leads or spark plug without taking the inlet off,couldn't do any more outside the house take it to the garage.the garage said have to take the inlet off aswell to diagnose it

 

So air inlet, not manifold?

 

Yes sorry,either way could be expensive, garage said take it apart replace the coil pack put it back together and then it might not start after all that,drove just over a mile to get home,garage said could be compression issues

 

Is it individual coil packs or a combined one?
Can you just swap one to see if coil if misfire moves with it?
May be a plug even possibly.

 

Combined coil pack,AA man said can't get to cylinder 2 without taking it apart and couldn't do it roadside to check plug lead or coil pack

 

Have a look at the vids on utube, it really doesn’t seem difficult to do.

 

Thank you very much,AA man said couldn't be done

 

Will finally get time to try and swop the plugs tomorrow
Is it easy enough to get the electrical connector off,be easier if it was out the way?

 

Are you going to replace the plugs or do the coil pack first to see if that is the problem?

 

Hi Phil
Was going to try the plugs first,being honest not got the funds at the moment to do the coil not attempted replacing a coil before

 

Thank you for all your help guys,couldn't get the connector off didn't want to force it (AA said if I took connector off would need to take it to main dealer to be reprogrammed),as I have never took a manifold off or re-sealed done a coil before,had to take it to the garage,they said £300 it was £70 coil £40 leads and £30 plugs special iridium plugs apparently ,and pressure test rest is labour.
Bit embarrassing really considering the work done from a bare shell to engine work
Will put a picture of the manifold tomorrow when she's back all the videos are the manifold all silver mines half silver and black

 

Just spoke to the garage, changed plug 2 good spark coil pack and leads all good,put new plug in still miss-firing and code come up,he said it's low compression wanted 4 hours labour to take manifold off and do compression test (not done a compression test)and head needs to come off,could be piston or rings,that's done it I think can't afford to get it done and of all the weeks I really need a car

 

Probably less than buying another car?