Engine randomly dropping to 3 cylinders when driving.

[Retros12]

hey guys,

my GF complained that the car has been dropping onto 3 cylinders randomly this week.

i tool it for a drive to see exactly what its doing, it will start missing then as soon as you take you foot off the throttle it will go back to normal?

odd.........., the turbo gasket is blowing but i have a t25 and fmic that im going to fit today.

anyone had an issue like this? the rota cap looks new along with the leads.

[s13eater]

could it be a plug breaking down or an injector blocked.

[Retros12]

i think it could be a lose lead since its only when changing gear maybe when the engine rocks it moves the lead! ill havwe a play this weekend see where i end up.

ill check the injectors and plugs cheers mate.

[CamInHead]

Could be a bad dizyy cap, rotor arm, possibily earth somewhere, lots of things really. Be easiest to see if you're getting a good spark on all 4 cylinders first, I should think.

[Retros12]

think i found the issue! major air leak!! the CAC pipe was not tight! so when ever it boosted it would leak air.