fc running a little rough

[redgti]

just bought an fc, it seems to be in ok condition starts no problem hot or cold. however when i sit with it on the drive and rev it say to 3000 rpm as the revs are falling it seems to be missing slightly. i will be ordering new plugs and leads and give it a full service.
 
anyone have any ideas what could be causing it. Also noticed there is a missing earth that should be on the bulk head, possibly to the inlet manifold.

[m1tch]

Its probably the hesitation between the primary and secondary injectors firing, there is a crossover point where the secondaries ramp up and the primaries drop down at about there.

A full service is always good but also check for air leaks in the long rubber inlet pipe for any leaks underneeth which might cause it to miss slightly.

[redgti]

would that crossover still happen when it is revving in neutral? i haven\'t actually driven it yet mate, because its not mot\'d.

[TiddlesRX7]

Yeah a full set of plugs and or leads never goes amiss. Plus oil change etc etc.

[m1tch]

What plugs and leads are you going for? I changed mine for some manicor ones off Mazda Rotary Parts, I actually felt a difference in the power output as there was a proper spark

[Brett]

Hmmm... if the miss is on the run down (presuming throttle closed?) then it\'s going to be something other than the injector cross over (which is around 3700 iirc) - is it constant, or just the odd miss as the revs drop?

[redgti]

it just kind of judders and if i tap rapidly on the throttle i get some real good cracks and pops out of the back should have said its a standard egi.

[m1tch]

Might be the TPS (throttle position sensor) that might be off slightly, I know mine was, meaning that when the throttle is closed, the sensor thinks its slightly open, so increases the fueling

[grinder]

i have to admit i have ran magnacor leads on my last 2 FC\'s and they are very good - only downside - they arent cheap

[m1tch]

i have to admit i have ran magnacor leads on my last 2 FC\'s and they are very good - only downside - they arent cheap

They are above Grinder price! But they are worth it, you only need to buy one set

[redgti]

ok i\'ll look in to it. Grinder are you interested in the wheels i have on it??
 

 
send me an email on sidekickdmr@aol.com and i will sort more pics for you if you want.

[grinder]

depending on the price - yeah im interested in them

on the laptop at the mo - so no email client installed

but drop me an email at ... admin at fc3s dot co dot uk with a rough price and what condition they are in

cheers

Stu / Grinder

[m1tch]

depending on the price - yeah im interested in them

on the laptop at the mo - so no email client installed

but drop me an email at ... admin at fc3s dot co dot uk with a rough price and what condition they are in

cheers

Stu / Grinder

They looks pretty good when I saw them the other day when he picked up his seat, although it was dark :rollin but the car looked well looked after so the last owner would have looked after the rims as well

[grinder]

cool

my pc had now decided it wont boot

so can you email me at chojin22 at yahoo dot com

if the tyres are ok then i will be very tempted - my wheels are a bit rough - but has practially new rubber all round ( 205 front and 225 rear )

[redgti]

will email you with pics tomorrow if i can get some cheers mate.