RX7 tuga

My '93 FD3s it's completely stock, and as I have to do the anual inspection, I've changed de spark plugs, wires air, oil and fuel filters but after that (I'm not so sure, it could be a coincidence) the car atarts making some misfires when decreasing rpm's, below 2000rpm's. Still I went to the inspection and it didn't pass because the CO levels are too high (it should be 0.30 max. and it is doing 2,80)... the inspector told me to look for a bad vacuum sensor, because the A/F is too rich. Also hapens that the car when's hot stalls, and it's very dificult to put it back running... even when it's cold, it only starts 5 or 6 seconds after and the car it self jerks a bit and makes some weird noise, like a slippery belt( only in the precise moment it starts running).
Any sugestions? Thanks

AzEKnightz

iTrader: (24)

Check the basics. I would personally remove the spark plugs to see if they are wet or not. Make sure the wires are plugged in all the way. Sound like you are not buring the fuel efficiently.

Compression test would be a good way to make sure the engine is ok.

-AzEKnightz

RX7 tuga

Compression test would be a good way to make sure the engine is ok.

-AzEKnightz[/QUOTE]


Hi, AzEKnightz. Thanks for the reply, I thought the other members of this forum were more friendly and share their knowledge with the new guys like me... returning to the main issue, I've had already changed the spark plugs and noticed that the leading spark plug of the 2nd rotor was wet, I've cleaned them with a spark plug brush, but still remain the same behavior... regarding the compression tester, does any tester suits for this kind of engines? I've found a guy on internet near my location that do the compression test on rotor engines, but he asked $100 for the job, I've seen compression testers on Ebay for half the price...
I forgot to mention that after the inspection, the coolant was boiling ( the inspector high reved it for a while trying to achieve a better CO reading) and when I stoped the engine, it threw the coolant away... is it normal to gain such pressure on the coolant sistem? How do I purge the sistem properly? Thanks

RX7 Tuga

Tuga= slang name of Portuguese people - ( Portugal= Portuga= Tuga)

AzEKnightz

iTrader: (24)

Hi, AzEKnightz. Thanks for the reply, I thought the other members of this forum were more friendly and share their knowledge with the new guys like me... returning to the main issue, I've had already changed the spark plugs and noticed that the leading spark plug of the 2nd rotor was wet, I've cleaned them with a spark plug brush, but still remain the same behavior... regarding the compression tester, does any tester suits for this kind of engines? I've found a guy on internet near my location that do the compression test on rotor engines, but he asked $100 for the job, I've seen compression testers on Ebay for half the price...
I forgot to mention that after the inspection, the coolant was boiling ( the inspector high reved it for a while trying to achieve a better CO reading) and when I stoped the engine, it threw the coolant away... is it normal to gain such pressure on the coolant sistem? How do I purge the sistem properly? Thanks

RX7 Tuga

Tuga= slang name of Portuguese people - ( Portugal= Portuga= Tuga)[/QUOTE]


Am I not friendly? Hah, no worries.

The way I stated that way is because I need to diagnose the system for you and to help you learn. NOT to solve the problem for you.

Hence your response saying your second rotor is "wet".

Sounds like you have a leaky injector in the second rotor housing. Please check your injectors.

-AzEKnightz

RX7 tuga

Some videos that may help...

http://www.youtube.com/watch?v=1NYM3vHDCEs
http://www.youtube.com/watch?v=oQK2Y53slf4

goalguy02

iTrader: (3)

Sorry for the bad luck you are having. Cleaning the spark plugs with a brush is never as good as replacing them with new plugs. I would do that to start. Also, if your coolant is bubbling, this could mean that you have too much water and not enough coolant in your cooling system. But it could also mean you have a cooling seal issue in your engine. A compression test ( or tester ) will help alot.

Either way, knowing English is probably not your first language will make coming here for help a bit frustrating, but stick with it and it will get easier. I find it amusing how the dialects literally translate from one to the other.

Best of luck