Hi I have a 89 sapphire that won't rev past 5k it's misfires then drops the revs a bit then goes again up to 5k same again, normal driving is fine any help appreciated thanks

 

sounds like it might be over boosting

 

cheers for the reply the car has been laid up for 9 years, I re gapped the plugs today and I think it has got worse, it coughs and splutters under normal driving, they r new plugs they wer @ .68 and I re gapped them to .8 I think I will go back to .7

 

you need to do a full recommission on the car , clean out the fuel tank clear lines, and stick a new timing belt on ., plugs. , clean all connections, check your voltage at the pump etc .

way too easy to fook an engine up

 

I agree with you James, the chances of the car running right after being laid up for 9 years without doing all the usual checks etc is pretty near zero!

 

Its definitely not a turn key situation.

I'd be cleaning checking and replacing as much as possible prior to any thoughts of driving it.