Advice on injector O rings, what to do?

[jaydee]

My son has a 97 Mazda 626 that has been running a bit crook. New plugs, leads etc, still rough. By the way its on dual fuel and is rough when on gas.
In desperation took it to the gas guy who put a new exhaust manifold gasket in which made a big difference (had a back fire sometime time ago which did this damage).

He said it's still sucking a bit of air hence running rough and said it was the injector O rings and needed replacing.

Son couldnt afford the extra work at that time so we said maybe later.
Now I'm OK with the spanners but never tried playing with injectors, how hard is it? Do I need special tools?

Also would I be better off just getting a new set of injectors, I presume they already have the O rings fitted. They're only about $140 for a set of 4.

Thanks in advance.

[z80]

About 30 bucks.

Unscrew the injector rail....pull out injector, slip new o ring on, reverse the procedure.

Not rocket science....on most cars

[svo347]

Cheap insurance I'd go new. If you need a hand mate I'm willing to give u a hand for the costly price of a can of coke

[my67xr]

yeah id just be replacing the injector seals,
falcon injector seals are only about $2ea,
its a mazda 4 cyl ( im guessing), if so it has 4 injectors, 2x seals per injector, so $16 maybe?
and iirc 4x bolts hold the injector rail to the motor.

[jaydee]

OK thanks all for the tips.
SVO347, thankyou for the offer, I think I should be OK doesn't sound that big a deal, I should be right. Famous last words.

[my67xr]

yeah easy job, just a little wd/crc spray on the new ones to help 'em slip in