Erifx

When I first start my rx7 (1987 na) Its fine, and at low room its fine. If I were to give it up to 4000 it missfire or seems to skip. After it warms up its runs fine. I can floor it all day. I dont know were to start. Is there some question you guy could ask to help me narrow it down?

clokker

iTrader: (2)

Any time I hear of issues at 4k rpm, first thing I think of is secondary injectors.
Not sure why it would clear after warming up though.

Erifx

Is there a fuel cut based on temp?

Erifx

It does not feel/sound like a missfire. It seems like a fuel cut.

MickeytFC

iTrader: (1)

Is the car modified or stock?

7krayziboi

iTrader: (15)

When was last time you checked timing?

Erifx

As stock as I can see. I have never checked timing.

satch

iTrader: (1)

You might want to check the water thermosensor if a hot start engine runs fine from the get go in addition to a cold start engine running fine after the engine has warmed up.

Erifx

I well just replace the thermostat and as for the timeing...no idea how check that

satch

iTrader: (1)

Are you confusing the thermosensor with the thermostat? And using the advanced search feature will provide you with 100's of threads related to timing.

Erifx

I be check timming this weekend. Thermo switch, yes I was getting it mixed up sorry. I am looking for were is is located right now.