94 wrx missing
 

94 impreza missing put new coils and plugs in it last week took them out earlier to check put them back in and it ran fine for a we while started missing again disconected the battery and again it ran fine for about 15 mins then it started again did a fault diagnostic and no fault found so can any body help at all? thanks

mines doing same been advised to change maf sensor

trying to source one to try though

ceri

ive actually got a spare one one in the shed ill try it after work and let you no

Sounds like a similar problem I encountered ?
Runs fine and then when warm it misfires ??

Was firstly advised it may be a MAF sensor which made perfect sense.

It actually turned out to be a broken 1/4" hose connector on the circular shaped plenum before the filter box, a common problem apparently !
This hose ultimately connects to the duty solenoid which is located next to the front drivers strut in the vacinity of the MAF sensor.
The hose itself is located directly under the pipe going to the air filter.
May be worth a look see......?

Mine had sheared right off and so required drilling out and a 1/4" hose adaptor was fitted.

If so and you need an adaptor I have some spare - you simply drill out the hole (approx 8mm)slot the adaptor in and tighten it with a spanner.
Similar to a rawl bolt but rubberised and airtight.

there you have it a stub to refit the hose to. :luxhello:

Consider also the fuel you are using ?!?!?
I hear that Shell has a shelf life and the components deteriorate quicker than other fuels ?!
So if you are not using regularly it could breakdown. :thumb:

good luck.

its only 95 ron petrol we get up here in the western isles so i was using nf but its to heavy on the plugs so im back to just octane booster you dont get much else up here on this f****g rock