answersLogoWhite

0


Best Answer

This is actually to be expected to a certain extent with these cars, since they are designed to inject a small amount of oil into the combustion chamber to cool and lubricate the seals. When the engine is shut off the last bit of this injected oil does not get burned off, and just sits in the combustion chamber. It is then burned at startup along with freshly injected oil, giving a "double dose" for a second or two. I would be more concerned if, after sitting a while, the motor DIDN'T produce a little blue smoke. Now if it looks like you're fogging for mosquitoes, I'd say your rebuild wasn't a complete success, but as long as the smoking stops within a few seconds, I'd say it's OK. I totally agree with the above answer... I've owned 2 RX7's and the both blew blue smoke at start up. ZOOM ZOOM!!!!!!!!!!

  • ** ***

Ditto. I own one with 63,000 miles on it and it does it too.

my 84 rx7 has 160,000 miles and does it aswell and she still runs stong

these motors, 12A and the 13B, have an oil metering pump that injects oil into the rotor housings every time you use the gas pedal. so the more that you pump the gas the more oil that is injected into the housings. its to help all the seals and apex seals to live in the harsh temps in a rotor motor.(long time rotary driver and racer) thanks

User Avatar

Wiki User

โˆ™ 2015-07-16 18:08:55
This answer is:
User Avatar
Study guides

What page does snape say to turn to in 'Prisinor of Askaban"

What/Who kills snape (hint: its an animal)

In what book do we met Luna Lovegood

What do you think my favorite charecter is

โžก๏ธ
See all cards
4.1
โ˜†โ˜…โ˜†โ˜…โ˜†โ˜…โ˜†โ˜…โ˜†โ˜…
10 Reviews

Add your answer:

Earn +20 pts
Q: If a 1987 RX-7 1.3 B rotary engine has been rebuilt why would it blow blue smoke on cold starts for a few seconds and then run fine?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

Could the distributor be the problem when the engine quits runnig every 15 seconds on a 3o2 efi engine?

If you are saying the engine starts and runs for 15 seconds and dies and then starts again for another 15 seconds and dies . . . the distributor seems to be doing its job. You might want to check if there is a fuel restriction somewhere (filter or pump).


Engine starts and runs for a few seconds and then stops this keeps happening and engine won't keep running What is wrong?

Fuel pump


Why does a Briggs and Stratton 6.75 hp lawn mower engine stop after 2-3 seconds after it starts?

if it starts and runs for just a few seconds then dies it is generally a carburetor issue. clean or replace the carb and that should solve your issue.


Mitsubishi 3000gt starts remains on for a couple seconds then the engine dies If you step on the gas the engine will rev check engine light comes on you let go off the gas rpm down and engine dies?

It's probably your IAC.


Why doesn't my Contour blow warm air or indicate warm engine temp when the motor is warm?

The contour warm air blower starts on a timer 45 seconds after the burner initially starts, not on temparture


96 ford ranger sometimes starts for a few seconds but won't start after?

Diagnosis: Engine Won't Start or RunCheck related link below


Time that's starts with s?

seconds


What is wrong if your car engine shuts off as soon as you start it?

1991 mitsubishi eclipse 2.0L starts 2 to 3 seconds later shuts off


95 Chevy 350 engine loses power after about 3miles and stalls out but starts back up in seconds for another 3 miles?

change fuel filter


Your lawn mower push gas starts then stops within seconds?

If it starts and stops within seconds and after a few minutes starts again only to stop again, the fuel filter is probably clogged,


Your car starts then seconds later it shut off what wrong?

Q.Your car starts then seconds later it shut off what wrong A. that must be some crappy car


Why is your BMW 323I 2000 shakes when it starts cold for 20 seconds then the choke kicks in and the engine settles?

It is the VANOS working in conjunction with the cold start injector... once your engine reaches that proper temp, the "shaking" goes away.

People also asked