Mazda Bravo - Manual 2x4 1994 b2600 G6 - Lagging, running rough, flat spotting

STOOEM
Sat, 27 Aug 2022 07:09:55 +0000
Maintenance/Repairs

Hi everyone.

Car is a 94 Bravo b2600

Car WAS running on LPG, now running on petrol only.
All gas components have been removed.

I have replaced the following

distributor cap

leads

rotor button

plugs

removed and cleaned all injectors, checked ohms. All within spec

replaced injector seals

Timing is set to 5 BTDC using a timing light.
ECM was grounded per the manual.

ECM was replaced as the old one was toast.
It was a G630

Replaced with unit from wreckers with G18 from a Ford Courier of the same year and same motor.

No engine lights are present.

Car will idle and run without a problem.
Idle is sitting at 750rpm

It is bogging down around 1500rpm-2000rpm, then running out the rev range without a problem.
HP is compromised when driving. It has to be “feathered” to get up to speed.
Sharp stabs of the accelerator will make it stall.

I am at a total loss.
It will be something simple.

Any advice welcomed.

Thanks

Stuart.

6 posts - 6 participants