2nd gen FI 13B is unhappy
11-27-05, 10:50 AM
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2nd gen FI 13B is unhappy
I swapped an 87 FI 13B into another car and finally got it running - it fires right up and appears to run pretty well - will tach up pretty decently when cold, but after it's warm, when you hit the gas it sputters and pops and after a couple seconds it will eventually rev up, but something is definitely wrong. It could be my wiring??? any suggestions what to check or any diagnosis??? please help - i'm stuck 
11-27-05, 11:06 AM
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yeah its a rotary
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your timing maybe? check your crank angel sensor or maybe a bad sensor ?heres what most people say about this car check for vac leaks ,just throwing ideas out.
heres a idea what is that ensor that has thermowax in it>? i forgot the name of it.
heres a idea what is that ensor that has thermowax in it>? i forgot the name of it.
11-27-05, 12:54 PM
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the motor is now in a 79 mgb. I removed the motor from a running 87 from a police impound. I tried to keep everything as stock as possible and all the hoses look to be in good condition. it starts riigh up and idles fine (runs a little over 2k until it warms up then drops to 900-1000. only when i hit the gas it sputters and runs like crap. i know there are those large solenoid looking things on the exhaust ports - i thought maybe those weren't working right - should they be opening when i hit the gas??
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11-27-05, 03:48 PM
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Originally Posted by desertmoron
the motor is now in a 79 mgb. I removed the motor from a running 87 from a police impound. I tried to keep everything as stock as possible and all the hoses look to be in good condition. it starts riigh up and idles fine (runs a little over 2k until it warms up then drops to 900-1000. only when i hit the gas it sputters and runs like crap. i know there are those large solenoid looking things on the exhaust ports - i thought maybe those weren't working right - should they be opening when i hit the gas??
Those are you 5th and 6th port actuators. They typically open between 3500-4000 rpms. They will cause less performance if they do not open, but should not cause any hiccup when revving. It will just make you slower.
-Justin
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