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Model specific boards => Golf mk2 => Topic started by: ians on 09 March 2013, 09:10

Title: Hunting, spluttering, cutting out :/
Post by: ians on 09 March 2013, 09:10

My mk2 golf 1990 8v digi was running fine, then suddenly started hunting ie its reving on its own from 900 -1500 rpm. It then started to cut out at junctions but restart immediately, now it sounds like it's misfiring,
I've done the timing as per RJs guide, changed the blue temp for a genuine vw one, new ht leads, getting fuel and good spark.
I'm thinking it's electrical I've cleaned all the earth's, and double checked the vac lines, all the wiring seems fine I've disconnected all wiring and cleaned the connecting terminals
Really stressed and frustrated with it now
Any help would be ideal
Thank you

Title: Re: Hunting, spluttering, cutting out :/
Post by: apie2004 on 09 March 2013, 12:55

Have you checked the seal on the oil breather? That can cause rough running

Title: Re: Hunting, spluttering, cutting out :/
Post by: X4MGS on 09 March 2013, 13:03

Did you reset the ECU after fitting the blue temp sender??


Have you tried new plugs as well as the HT's?

Title: Re: Hunting, spluttering, cutting out :/
Post by: Mr Blue on 09 March 2013, 13:29

Dizzy is the next thing if the fuel pump is not the problem.

Wiggle the plug on the dizzy and see if that helps. The contacts can break around that area.

Title: Re: Hunting, spluttering, cutting out :/
Post by: kittie on 09 March 2013, 13:44

Quote from: apie2004 on 09 March 2013, 12:55

Have you checked the seal on the oil breather? That can cause rough running

Had the same problem recently and this is what it turned out to be, cheap fix at least  :smiley:

Title: Re: Hunting, spluttering, cutting out :/
Post by: ians on 09 March 2013, 16:38

Fixed thanks guys, it was the cam breather lol, just need to adjust the idle now as it's not idling, but it's much smoother and sounds healthy :) does anybody know if there is a default amount of turns? As I removed the screw and cleaned it.
Thanks again
Ian

Title: Re: Hunting, spluttering, cutting out :/
Post by: search on 09 March 2013, 18:18

wow didn't know the breather can make this happen to your car! mines snapped oil everywhere so iv ordered a replacement part but it came like that with the car and iv been trying to find out why my car been acting up i'v replaced loads serviced it just waiting on this part.... fingers cross it cures it.

Title: Re: Hunting, spluttering, cutting out :/
Post by: ians on 10 March 2013, 07:17

Mine wasn't snapped just perished not visible until I pulled it around....running like a dream now just gotta sort through idle out, but it's raining today :(

Title: Re: Hunting, spluttering, cutting out :/
Post by: analogue_rogue on 10 March 2013, 08:31

check the throttle butterfly and its housing are clean. this can cause hunting and idle issues... and its a quick check!

Title: Re: Hunting, spluttering, cutting out :/
Post by: ians on 10 March 2013, 13:11

Thanks, I cleaned them with a bit of carb cleaner, but it's free I will clean them again lol, I'm sure it's just an adjust issue. I'll report back ;)

Title: Re: Hunting, spluttering, cutting out :/
Post by: search on 10 March 2013, 19:48

Quote from: ians on 10 March 2013, 13:11

Thanks, I cleaned them with a bit of carb cleaner, but it's free I will clean them again lol, I'm sure it's just an adjust issue. I'll report back ;)

idle screw just needs turning any way to make idle where you want it. mixing screw tighten it all the way (slowly so you don't over tighten it) then back out 1 and a half times. but i wouldn't mess with the mixing screw to much.

Title: Re: Hunting, spluttering, cutting out :/
Post by: JC on 10 March 2013, 19:55

a 1.3 carb will not be the same a 1.8 gti digi  :lipsrsealed:

please be careful when giving advice that might be mis-leading.

Title: Re: Hunting, spluttering, cutting out :/
Post by: analogue_rogue on 10 March 2013, 21:14

woah sorry I misread it as an injection model.

If its a carb model check all jets for contaminates and check float height also check needle valve for correct seating.

don't touch the mixture screw without a gas analyser. its not worth the hassle.

Adjust idle to achieve 800 +/- 50

(I think that's the right idle but I stand to be corrected. either way its not a bad base level to start from.

 

Title: Re: Hunting, spluttering, cutting out :/
Post by: JC on 10 March 2013, 21:17

The advice comment wasn't meant for you :whistle:

Title: Re: Hunting, spluttering, cutting out :/
Post by: ians on 11 March 2013, 20:33

Thanks chuffed  :grin: I did get a bit confused there, have been out to sort it today, as it snowing :)