Thanks to everyone for the advice - this list has to be the best!
David
>Go for a drive and get the car up to the temp where it starts acting
>strangely. Got on for a little while then shut off the engine and coast
>to the side of the road in a safe spot. Pull each plug and look
>at the colour of the electrodes.
>
>white: too lean. mixture? fuel starvation? air leaks?
>tan: perfect
>black: too rich. mixture?
>
>I can't remember, does the HIF carb have a lift pin? You can quickly tell
>if the carbs are set properly by raising the piston by 1/8", the rpm should
>go up slightly and then drop back to normal.
>
>Also, pull the fuel line and put it in a bottle and turn the ignition on
>(obviously, dont try starting the car). The fuel pump should pump about
>a half litre of gas in 1 minute
>
>There's lots of easy things to check.......
>
>Not that tuning the carbs is difficult, and should probably be done
>anyway! Might want to check/set the valve to rocker gap and the timing
>while you're at it, too.
>
>If you can't seem to get the carbs set right, you might have an air
>leak. Check the throttle shafts for slop, and try spraying carb cleaner
>around the manifold and carbs while the car is running & hot and listen
>for rpm drops to indicate the location of the leak.
>
>Skye
>
>Word on the street is that David McNaughton said:
>> Again a cry for advice from the MG community!
>>
>> My 1973 MGBGT (1800) has recently been very hesitant on acceleration
>> from tickover and needs to be "coaxed" with the accelerator. It runs
>> just fine when cold and with the choke pulled out! I also notice that
>> this evening the tickover has dropped way low and the car stalls.
>
>--
>1966 MGB - GHN3L Safety Fast! __,__\__
>The MGB Experience http://www.mgb.bc.ca/ (_o____o_)
--
Dr David M McNaughton
Haddington East Lothian
Radio GM8 KOF
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