Surging

[Kev T]

My 82 GLF auto is surging when I hold a constant speed. It is fine at idle, fine when accelerating but when I maintain 50 kmh or 100 kmh (doesn't seem to matter which speed) it surges enough to rock you back and forth in your seat. It does maintain speed but isn't happy about it. I changed the plugs and checked the wires / distributor and rotor. I'm thinking coil or fuel pump. Any thoughts?

 

Also..once I fix it I will be selling it. Any thoughts on how much I should ask for a 1982 GLF auto with 133 ooo km on it?

[mrdeep2001]

check and see if the surging occurs in a certain RPM range like 2500-3000RPM or something like that. my car would surge in that RPM range in any gear. it may help narrow down the problem

[Ether Circus]

I would check out the fuel filters. I had a similar problem but it was mainly when i went up hills. HTH.

[joostvdw]

although I have a MPFI turbo, I'm still sticking around to see if you solve it, because I have the same annoying problem.

 

Sadly I'm of no further help for you, I know sqat about carbs

[Kev T]

Fuel filters? I checked the filter in the engine but I did not realise there was another. Is it by the gas tank? Also...would not a fuel filter act up under load? This is at steady speed in various RPM settings and goes away when accelerating or idling.

 

Scratching my head here!

[daeron]

check for play in the distributor shaft??