hello belive it or not my N reg 1.5 nexia returned from the garage today but still had a misfire so i changed the dizy cap leads plugs and rotery arm but guese what still misfired .............................
so after much head scraching swearing and contemplating getting a new ditributer i went back to the garage to bite the bullit while i was there the mechanic decided that it wasnt getting any fuel to cylinder number 2 so had a look behind the top of the engine
there on plaine veiw is 4 electric plugs each with 2 wires going in to them , for the injectors he very simply pushed down on them and we heard a click problem solved no misfire
apparently these shake loose after a number of miles an takes the fuel away fron the pot so hope this helps it worked for me let us know if it worked for you here is hoping :-)
New spark plugs do not always come pre-gapped. It is always wise to check the gap before installing. The routing of the leads have to be in the same order as they were removed, otherwise cross-firing can occur. Ensure the leads are installed at the distributor in the correct firing order.
Remove the cowling on top of the engine block to expose the head, you should be able to see and follow the HT leads.
check plugs or coil packs..
If bad plugs is causing the misfire. It could also be bad plug wires, a vacuum leak, burnt valve, blown head gasket, etc.
Old spark plugs can make a car misfire, run rough, and not fire at all.
Bad plugs, wire , coil packs if it has them.
you either did not gap the plugs to spec or you put this wires on wrong
The owners manual says .031, which is right for factory stock plugs. Using Autolite double platinums it's .044. Any less than .040 and your engine will misfire and set the malfunction light.
The wires running from the coil to the spark plugs are the leads.
A misfire is normally caused by bad plugs or plug wires, vacuum leak, burnt valve, blown head gasket, etc. Start by replacing the plugs, and go from there.
Could be coil, leads or plugs. On early models it could also be points. Later models with pointless ignition system problems tend to misfire in all rev ranges
Spark plugs or Coil pack most likely
you may need a tune up. the wires or your spark plugs
p0302 is cylinder 2 misfire, you need to fix the cause of the misfire. Possible causes are plugs, coils, injectors......
glow plugs do not fire glow plugs are used to heat the chamber where the diesel ignites diesel is not ignited by a spark diesel is ignited thru compression
Remove the 4 screws holding the top cover. You can then get to the plug wires and the plugs.
Whats happening is water from your washer jets is leaking and running down your airbox and somehow gettin into the coil pack/leads or plugs, causing the engine to misfire, engine management light will probaly be on the dash. It can be fixed by changin the coil pack but i would recoment tryin to change the spark plugs and leads 1st. This is a common fault with ford fiesta but it shouldn't happen with your year because they were realled 03/53 plates from then on the washer jets at a rubber seal on them to stop this from happning.
I have a 95, had a misfire... mine was because of the plug wires... changed the wires and plugs mis fire stopped...
Replace the HT leads to the spark plugs.
Check Spark plugs Check plug wires Do a compression test
Ck your injectors, may have one failing
Time to replace seals, this usually causes misfire.
Last summer, the cylindars started to misfire on my 2002 lancer. Once the spark plugs were changed, I haven't had any more issues.
P0303 is cylinder #3 misfire. P0300 would be random misfire. Either way you need to diagnose the case of a misfire. Check spark plugs, plug wires(if equipped), cylinder compression, fuel inectors, and wiring.