Try spark plugs and wires.
I have the same problem on my 73 super beetle but mine is on 3rd gear there is no pull even of flat terrain, i had my engine rebuilt by a mechanic last year, the car has had the problem since.. one thing i noticed is that when this mechanic put the engine back togueter the firing order was altered TDC #1 is now in the position of cylinder #2 the engine runs good but the firing order is not the same as on the book specs....any input in this matter anyone? can the firing order be altered like that? this problem is killing my pocket i have not tried the plug wires yet but will do so this weekend
Me again.With the motor running and idling,pull off one plug lead and see if the engine revs drop just a tiny bit.If not,put the lead back on and try another one.Do this on each lead.Chances are you will hear the revs drop,and that narrows down the problem to either the plug or lead.Use a heavy rag to grab and remove the leads and don't do it if you have an old type pacemaker inside you:) If all these are good recheck the point gap and timing.4th gear in these is an overdrive ratio so bad timing doesn't help.Also.Make sure you are getting full throttle
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sorry for being vague.I changed points ,rotor,and cap air filter and fuel filter.
The problem is going short hops, never getting out of third it performs pretty good, but once I get into 4th it has no power with a max speed of 55. Engine raps up pretty good with no backfiring -Thanks
Did you change the points as well as the cap and rotor?Does it cough and splutter when you try to accelerate.
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