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Thanks for the reply :-

Everything was taken apart and different carb, rotor arm, distributor, plugs fitted. Still no change. So, put originals back on and car ran fine. So something very strange going on.......

As mentioned the car has a Weber carb fitted and I adapted the throttle linkage by sawing a bit off the height between the linkage lever and where it bolts onto the inlet manifold so that a full throttle press opens up the carb fully i.e. linkage pivot at same height as carb spindle, but it still didn't seem to accelerate like it should.

Fitted a Bosch "blue" coil a couple of weeks ago as there was a very weak spark. Car ran great after that with much better pull. But this seems to be where the problem started. The Weber has the idle shutoff solenoid which is connected to the coil, every now and again there is a blip in the exhaust note, a drop on the tacho and a spit from the carb. It seems as if there is some kind of short in the circuit which shuts off the carb, if it shorts frequently you get the bad idling scenario. Okay, wire the solenoid to some other switched live but you still have a problem.

The spark plugs from cylinders 1 & 2 were perfect, but 3 & 4 were quite black.

As regards the servo agreed this needs looking at, however there is no noticeable drop in idle when the brakes are pressed. But whilst on the subject I came across a 96 about a year ago that had a gasket between the servo & master cylinder. Is this right? Only, where the two units mate you will never get an airtight seal because the mating surface of the servo has a groove in it and I couldn't figure out the purpose of it.

So apart from the "blip" everything seems to be mysteriously working now. Oh, on the subject of carb gaskets, is it now the norm to use the hard drying gasket cements or do we still have to fiddle with those wafer thin metal gaskets??

Thanks again for the pointers.

Glyn.

• V4 - Is it a blown head gasket???, Glyn, Thu, 17 May 2001 18:45:16
  • Re: V4 - Is it a blown head gasket???, Andy in PDX, Sun, 20 May 2001 14:59:23
  • Definitely carby..., spiv, Thu, 17 May 2001 23:13:18
    • clogged fuel filter? stuck float?, larry, Sat, 19 May 2001 13:32:19
    • Re: Definitely carby..., Glyn, Fri, 18 May 2001 20:36:09 <-- Viewing This Message
      • Re: Definitely carby..., Glyn, Mon, 21 May 2001 06:18:15
  • Re: Nope, keep looking on that Carb. butterfly?, Carlin 69/96, Thu, 17 May 2001 21:35:10

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