Car stutters/loses power when you floor the accelerator (Video added)

[InsightMusic]

Hey everyone,

The is an issue I came across on Saturday morning on my way to work. First time i've ever had this sort of issue and i've owned the car for over 2 years.

The car was working perfectly fine until I got on the A1 motorway and put my foot down. There was a massive lack of power and if the car was standing, trying to set off was incredibly hard (Foot down/high revs).

I was able to wing it to work as having the manual choke on full gave the car a little more power back.

I had the RAC come out after work on Saturday as the car wouldn't start (Engine cranking but no start up). He had a look around and noticed the earth cable that went from the Weber carb to the rocker cover was a little loose, so he tightened it and funny enough it worked.. For half hour anyway.

That's now been replaced but the issue still remains.

I'm driving a Mk2 Golf 1.8 GL - recently fitted Weber carb with a manual choke.

Any help would be greatly appreciated!

Thanks,
Stefan

[InsightMusic]

To add to this...

Just changed the mechanical fuel pump and still no difference. I've just done a quick check and when I'm sat, the car idles great, but if I keep my foot on the accelerator, as soon as it hits 3000rpm, the revs shoot back down and the car stalls.. It's quite odd.

I'm starting to think there's a fault in the fuel line. The fuel filter and fuel vapour separator (I believe it's called) were both changed when I fitted the Webber carb only 6 months ago.

Thanks,
Stefan

[lemski]

Is it when its warm only. Only carbed thing ive had was the mechanical pump on the side. Diaphram was f**ked.


Failling that. Clean the rotor cap and plugs.
Maybe chuck a coil on it as a last resort.
Could well be ignition side

[InsightMusic]

Quite possibly, hard to tell.. This morning I drove 15 miles and it was fine. I then went back out 2 hours later and after 5 minutes it happened, so quite temperamental.

I'll give the distributor arm and cap a good scrub. I do actually have a spare distributor, should I try replacing it?

When do you mean exactly when you mentioned 'Chuck a coil on it'?

Thanks,
Stefan

[lemski]

When coils get how they play up.
But then what your describing to me sounds electrical.
Chuck the dizzy on itll rule out hall sensor if they have them. Long time since i looked at a carbed mk2.

Also the ign amp in the scutlle.
Where abouts are you mate. If you not too far i don't mind coming and having a gander

[InsightMusic]

Could well be electrical, shame I haven't got a multimeter..

I have read a few times that it could be an issue with the hall sender, but what i'm not understanding is why it's okay one day, but worse the next.. I'll replace the distributor today, see if that resolves anything. I'll also check for vacuum leaks.

I'm based near Bedford in Bedfordshire.

[lemski]

Too far away for a afterwork drive. Haha
The wires get weak and brake on the hall senders so they conta t then dont.
I replaced the hall on my dizzy and that was a different design with out wires just metal strip straight to the plug.

If you have a coil its another thing ruled out.

[InsightMusic]

Replaced the distributor today (luckily I had a spare one going) and all seemed to go well when I took it out for a drive. Gave the plugs a change and gave the ignition leads a good clean too.

I also replaced a majority of the cables/connections such as the battery terminals, alternator cable and starter motor cables. I don't think they could have been the cause of the issue, but it shouldn't do the car any harm for sure!

Haven't played around with the carb at all today, so we'll see if the issue occurs tomorrow.

Thanks,
Stefan

[InsightMusic]

The issue still persists.. there's a real lack of drive in the car, the acceleration seems restricted in a way, I could barely pass 60 on the A1.

When you press down the accelerator pedal, it feels lumpyif that makes sense? It feels like the fuel is restricted somewhere when trying to gain more power.

When idling its fine, in neautral and revving seems okay now, but when driving it struggles really bad.

Any further ideas? Could there be an air intake restriction?

Thanks

[hardcrimper]

It could be the carb icing up, I had the same prob on a GL I had years ago , some how but can't remember how, I got hot air to the carb and that sorted it.