mrzee
Part of things
Posts: 582
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Jun 14, 2011 11:44:06 GMT
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I have a 1976 Volvo 66 that starts ok with the choke fully out but is over revving on tickover. I will post a vid so you guys can hear it but does anyone have any ideas of a likely cause?
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Jun 14, 2011 12:14:52 GMT
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Is this the 1.4 push rod Renault engine? If so I had one in a 340 years back. If it has the same weber carb there will be an idler valve on the side. The wire to this is prone to rot or drop off. Somebody may have compensated for this by turning up the revs.
Best of luck
Scottt
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Jun 14, 2011 16:39:07 GMT
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Volvo 66 is just a DAF 66 with a different badge. This is 1300 renault engine and if its standard then the carb is a solex one.
If its just over revving with no other poor running systems just wind the idle screw back.
Otherwise.
Disconect the main vaccum feed from the manifold and plug the hole in the manifold. This is important otherwise you'll be tuning the engine with a huge amount of pipes that could easily have a leak in them.
Take out the plugs, clean and regap them. Do the same with the points. Then reset the ignition timing marks and stuff, will be listed in the manual. You may need to then tune the carb just fiddle with mixture screw till you get the best idle.
Then reconnect the variomatic vaccum feed if things go to pot now you have a leak in the transmission.
There are several rubber pipes under the bonnet and two to each primary drive pulley under the back end. These are more than likely at fault.
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