Bogging at low RPM

jamescowell · Posted: Tue Mar 03, 2015 6:15 am Post subject: Bogging at low RPM

Noticed when driving to uni this morning that my bug has a habit of bogging down/stumbling/hesitating when I apply power at low RPM, i.e when pulling away from the lights or occasionally when coming out of a corner in say 3rd gear. Sometimes it backfires too. When the RPMs increase, the engine runs fine again with no noticeable loss of power. I've recently had the car serviced.
Any thoughts at what could be causing this?

Engine is a 1200 'D', carb is a Solex H30/31PICT, dizzy is a 009.

gt1953 · Posted: Tue Mar 03, 2015 6:50 am Post subject:

Is the carburator icing up? Look below the carb at the intake, is it icy?
_________________
Volkswagen: We tune what we drive.
Numbers Matching VW's are getting harder to find. Source out the most Stock vehicle and keep that way. You will be glad you did.

72 type 1
72 Squareback
({59 Euro bug, 62, 63, 67, 68, 69, 73 type ones 68 & 69 type two, 68 Ghia all sold})

jamescowell · Posted: Tue Mar 03, 2015 7:58 am Post subject:

No, the intake manifold is warm and I've checked previously that the heat risers are functioning.

Randy in Maine · Posted: Tue Mar 03, 2015 8:25 am Post subject:

I would be looking at the idle jet to see if there is a bit of crud in there.

MacLeod Willy · Posted: Tue Mar 03, 2015 8:37 am Post subject:

I would check the accel pump, the initial timing, dwell and see if the vac advance is working properly.

Especially if it was good before the service was performed

Volks Wagen · Posted: Tue Mar 03, 2015 1:48 pm Post subject:

Timing possibly? What did they do as part of the service? (Willy Mc it's a 009 so no vac advance.)
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1973 1303 with AB-motor - sporadic
reconstruction as time permits, 1986 ex-Bundeswehr Doka - on the road again.

I'm definitely, probably, the worlds greatest lover.

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MacLeod Willy · Posted: Tue Mar 03, 2015 3:40 pm Post subject:

hava · Posted: Tue Mar 03, 2015 7:35 pm Post subject:

I have the 009 and h30/31 combo, I was having the same trouble so I put a little more advance and it fixed it.

I loosened the distributor and turned it counter clockwise very slightly - 3mm or so.

jamescowell · Posted: Wed Mar 04, 2015 7:57 am Post subject:

Volks Wagen · Posted: Wed Mar 04, 2015 1:38 pm Post subject:


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