siggy

hi all.
I have a standard 2001 wrx with 24k on the clock. When i start the engine it takes quite a few turns for it to fire up !! is this normal ? could it be the plugs as it also stutters abit when accelerating hard. boost celenoid is ok. thanks all.

vulnax999

iTrader: (7)

Not sure on new age but classics seem to have plugs lasting 2 years / 30,000 miles!

I suppose it's something to do with the plug design and materials ( platinum or iridium tips I think ? )

ZIPPY

Siggy,do you let the fuel pump prime up before you try to fire her up ? you will hear it buzzing for a few seconds after you turn the ignition on when it stops then fire it up.

The plugs in the bugeye are supposed to last 60,000 miles but i changed mine at 25k and it felt much better.I have just done a mates MY01 (30K) and he is well happy now the plugs have been swapped.

Zippy

nigelward

The Subaru service schedule for MY01 has spark plugs down to be changed every 30K miles/3years (whichever comes first).

Nigel

siggy

cheers guys

greasemonkey

Probably. Subaru ECU's are designed to let the engine turn a few times to establish oil pressure before it'll fire. If it's always been the same and is not taking longer to start than it used to, you can assume everything's hunky dory

BTW, the NGK platinum tipped spark plugs fitted as standard to turbocharged Imprezas are more than able to cope with the 30,000 mile replacement interval, provided the engine's running correctly.

Absolute Shower

Wiv std boost they should last that long no probs. I've done 30k in total, but with increase in boost in stages, found the plugs had worn giving the odd engine misfire error code - on inspection, the plug tips were round (worn). Have a look at one of them, just to see condition. Drivers side, near filter box is easiest (don't try washer bottle side - pain in the neck to remove and re-install).

Bob Rawle

Well worth changing them at 15k intervals, they do degrade progressively however more so with mods/higher boost.

bob