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It runs rough, is sluggish and smokes (bluish-white)..reverse..dies…

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I have a 87 RX7...
I have a 87 RX7 GXL Automatic. I have no problem starting it, but it runs rough, is sluggish and smokes (bluish-white) a lot once it's warm. When I put it in reverse or drive it dies. I've replaced the air filter, fuel filter, spark plugs and wires, oil filter and I'm using 20-50 oil with a quart engine honey. This is the first Rotary engine I've ever worked on. I think it's very cool, but I wish I could get it to work.
Help!!! Thanks, Ron
Submitted: 8 years ago.Category: Car
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Answered in 53 minutes by:
6/27/2010
Auto Mechanic: Ironmike, ASE Master Tech, L1 replied 8 years ago
Ironmike
Ironmike, ASE Master Tech, L1
Category: Car
Satisfied Customers: 3,452
Experience: 30 years GM certified, Ford certified
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greetings,

did you check compression(85 psi minimum)? was the engine ever flooded? easy to wash the motor out with cold start issues

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Customer reply replied 8 years ago
I have not checked compression yet. I don't have a compression gauge. The engine has flooded may time. It's a very common problem with rotory engines.
Auto Mechanic: Ironmike, ASE Master Tech, L1 replied 8 years ago
to replace the apex seals you need to disassemble the engine. You may need to replace the rotor housings. It may be more cost effective to buy a reman engine.
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Customer reply replied 8 years ago
The car had been running great. No smoke. Then one day I drove my son to school, no problems, then on the way back as I was going up hill it started getting sluggish, lost power an I couldn't drive it home. Would the seal go out that fast. The car only has 87000 miles and is in very good condition.
Auto Mechanic: Ironmike, ASE Master Tech, L1 replied 8 years ago

no, not that fast.

what about the fuel filter and fuel pressure? (35-37 psi) I would check that first and then check for the exhaust getting restricted

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Customer reply replied 8 years ago
I just replaced the fuel filter yesterday and I had the exhaust redone and took the 3 cats out about 6 months ago.
Auto Mechanic: Ironmike, ASE Master Tech, L1 replied 8 years ago
ok, lets check the fuel pressure.
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Customer reply replied 8 years ago
Would low fuel pressure make it smoke so bad?
Auto Mechanic: Ironmike, ASE Master Tech, L1 replied 8 years ago

if it is just blue that is from oil. if mixed with white(lean) yes

look at the spark plugs and tell me what they look like,what color.

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Customer reply replied 8 years ago
Rotor 1: brown on both L and T. Rotor 2: leading looks new with a very little brown. Trailing looks new with a little oil residue on it. Note: I replaced all 4 spark plugs and wires the day I had it towed home.
Auto Mechanic: Ironmike, ASE Master Tech, L1 replied 8 years ago

brown sounds like bad gas. Can you take a sample, use a glass jar and let it sit for a few minutes. If it separates you found the cause.

 

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