Hello I have a peugeot 306 1.4 r reg it keeps misfiring when I have to slow down the car cuts out the problem has got worse I have changet the rocket cover and the valve sensor I am at my wits end can somebody please help thankyou michelle
First, not knowing how many miles are on the vehicle makes it hard to tell. Check for tune up if the miles are high. Also, check fuel pump pressure and make sure it is within spec. Finally, if the check engine light is on, have the computer scanned for trouble codes. Most part stores will do it for free.