Sapphire miss fire
#1
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Location: essex
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Sapphire miss fire
My sapphire was fine when I tucked it away last year. It is now back on the road, but when the revs hit 4000 it holds back and coughs and splutters and miss fires. Any ideas?
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#6
Hi m8 mine did this and it was the 3 big wiring multiplug connectors on the bulkhead just above the rocker cover,they were full of oily residue,i just cleaned all 3 out and it was sorted,looks like some people cut the plugs out when reading up on them,worth checking only takes few minutes
#10
Wahay!! I've lost my Virginity!!
mine did that,it was the threaded terminal that screws onto the top of the plug which the plug lead pushes onto,as you bought new plugs if they had screw tops did you check they were tight?
mine was popping and misfiring as i accelerated and the tops on the plugs were all loose tightened them up ran spot on after,something so simple can make you fear the worst
#11
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Regapped the new plugs, tightened the earth terminal on the battery and fiddled with the multi plugs behind the engine. Now revs to just over 5000 before it starts missing. Some progress but think I will let Grove Garage take a look tomorrow.
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DixieTheKid
Ford Sierra/Sapphire/RS500 Cosworth
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06-06-2020 11:20 AM