...got to it before me

 

 

yes yes i know i know compression test.... too damn cold... but i will... need to wait for it to warm up...

 

Were exactly are you located? Is this the red rx7 that i saw in Des Moines on I235? I go back in forth between DM and CR so i can help come warmer weather.

Also, is it possible for it to be a bad cat converter? Clog cat suffacates motor, unburt fuel dumps into exhaust, fuel ignites causing backfiring and excessive flames. Sounds good in my head...lol

 

I am located in Hampton But drive to waterloo and back for work. I have been down to Des Moines and Ceder Rapids quite a few times. Could have possibly been mine.

 

Pull the cat and replace it with a downpipe. I was nervous about it but then it was surprisingly easy. Many advantages and your going to do it eventually no matter what, so order one. My ignorant vote is for something other than motor. My old 89 did that once and it was just a loose hose on the intercooler, bypassing the air flow meter, (these cars use a Manifold Absolute Pressure sensor instead, but you get the point).

 

It does have a Greddy exaust... is that factory or aftermarket? I see a lot of rx7s with it and some with out it

 

He obviously means replace the pre-cat with a downpipe. The precats have a well-deserved reputation for disintegrating at ~50K miles. When they do, they can block exhaust flow and also, in addition, plug the main cat.

Dave

 

yes, but i was also wondering if the greddy is stock or aftermarket. if it is aftermarket then the previous owner my have taken the CAT out

 

Greddy is an aftermarket company, therefore it's an aftermarket catback. Just because it has a catback doesnt mean that the main cat was removed. If you have different rims on the car, does that mean the suspension was replaced as well ?

 

A Greddy catback is not stock. Yes, its possible you already have a downpipe on the car in place of the stock pre-cat. However, you either need to snap a lot of pictures or get someone over there who knows about these cars.

I know its frustrating, but this is just the beginning if you plan on keeping the car for a while.

 

BUT IT'S WORTH IT!

Dave

 

well... i hope after the rough beginning it will be all worth it in the end...

 

Yeah - I'm hoping, as I know you are, that it's something relatively simple and inexpensive.

Dave

 

You said your car was in your garage right? Well if you wanna take care of this problem quickly, then i would grab a couple of heaters and do a compression test.

 

well... its in a small garage... if i were to work on it i would eather have to actually stand outside in the cold.... or push it through the snow into the heated garage...


im in a delima... i know....

 

We want to know, so make it happen!

If the exhaust has been changed, its likely other things were also done. It would be very good to find out, just in case you have modifications that require another modification to protect the engine. A $10 manual boost controller, for example, would also require a new computer and injectors, etc.... Some here also suggest a piggyback computer with just a free flow exhaust and intake, because the stock computer runs too lean (not enough fuel). You probably don't have one. Can you contact the previous owner?

 

It does seem like it has been running too lean or too rich ever since i got it... never right... It always has smoke coming out of the exaust... cant tell if it is blue or white... seems like a little of both. After it started having major problems there were times were there was a little black smoke as well. but more blue or white.

after the engine started having problems it lets out a lot more exaust. A LOT MORE. I had it in a freinds garage when we got home and started it to get it to my house. let it run for only about 2-3 minutes and by that time the exaust was so bad that it was filling the whole house. when we opened the door to the garage ( attached 2 stall) there was nothing but exaust....

That mean anything or normal when having these types of engine problems?

 

Lots and lots of mostly white smoke is coolant seals (or blown turbo). In your case, it is probably coolant seals.

 

 

At least your keeping a positive attitude about it. You'll have an incredible car when its all done. Go for super stud!

In the mean time, buy a miata to beat on.

 

The only thing that is keeping me going is the fact of seeing complete rx7's...


I think even if i do a compression test and it only needs a few parts i may just save up for a complete over haul.... cheaper in the long run

first thing.... drivers side door handel.... mine broke because of the cold...

 

Hey my car did the same exact thing this fall ran fine but was untuned and then lack of power then wouldn't idle then backfired a bunch and wont start at all now! I have an 86 Fc with a re-ammemya body kit a 13btt-re motor from japan and a microtech ems. i did a compression test today and it said both rotors were about 90 psi? is this good or no cuz i am sick of it not starting!

 

Don't want to sound snarky, but I wouldn't even start one of these cars without one.

 

90 psi on all faces is good b/c the readings are even (no broken seals), but it's kind of low. You probably have a decent amount of mileage on the motor, no?