MOT HELP!!!! Rich and rough on idle

[rx7ali]

Not sure if i need to lean the car out or sort something else out like a missfire, but i need to do it quickly as got my 1st MOT in the next couple of weeks.
 
Help, advice, thanks

Ali

[DMDRIFTING]

What ecu are you running?

[rx7ali]

What ecu are you running?

 
stock ecu, with cat back filters and front mount (but was running the same without the fmic.

[m1tch]

When did you change all the plugs and HT leads?

[rx7ali]

I haven\'t changed the leads or plugs yet. Just getting a feel for what potential fixes are. So far I have been suested the map sensor and also sparks as a possible problem.
 
Guna have a look tomorrow night strait after work.
 
Any other possible causes?

[Grizzly]

Worth investing in some new plugs, they don\'t tend to last very long.

[pdtaylor18]

Are you getting a misfire? with the map sensor vac tube off it will behave like a misfire, black smoke and runs like pooooo but its still driveable

[rx7ali]

Any sugestions for what plugs to buy? Preferably a brand i can buy localy or get posted quickly.
 
I don\'t think it\'s missfireing, it\'s just not quite smooth running. No smoke and no stalls, just a little shakey under the bonnet, and if you play with the throttle it back fires nicely

[Grizzly]

I think only NGK makes Rx7 plugs? I can\'t remember the Part no off the top of my head for the FD but there not hard to get hold of.

[Grizzly]

Any sugestions for what plugs to buy? Preferably a brand i can buy localy or get posted quickly.
 
I don\'t think it\'s missfireing, it\'s just not quite smooth running. No smoke and no stalls, just a little shakey under the bonnet, and if you play with the throttle it back fires nicely

Sure is not something like a dodgy engine mount?