No port actuators
02-19-2007, 03:51 PM
#1
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Join Date: Jan 2007
Posts: 18
My cars stored a couple of hours drive away but the last time i drove it, it stumbelled and spluttered when i floored the car but was ok when i gently pushed the accelerator. This only happens above 3500rpm, so after research i thought i might be the fifth and six port actuators but when i checked my car it doesn't have actuators. Its an 86 N/A second gen does this mean its a four port or a six port.
Cheers for any help.
I'v read a couple of times now that all 84-92 13b's are six ports so are the ports always open. I'v been looking for any other posts about this for a long time.
Cheers for any help.
I'v read a couple of times now that all 84-92 13b's are six ports so are the ports always open. I'v been looking for any other posts about this for a long time.
02-19-2007, 04:39 PM
#3
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Location: WA, Renton
Posts: 714
Originally Posted by KompressorLOgic' post='859878' date='Feb 19 2007, 02:38 PM
having your ports stuck closed will cause the car to peak in power around 5000 rpm, so basicly u will still rev but have seemed to run outa steam above 5500ish
it will not cause stumbles, this sounds like possibly a tps issue or maybe a secondary injector not working correctly
02-20-2007, 11:29 AM
#5
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Sorry i haven't got any good pictures with the inlet pipe removed. But just to make things more clear the actuators are not jammed open or blanked off there is no sign of them ever being on the lower intake manifold.
I'v attached a picture the item circled in red is not on the manifold but there is a blanking plate, so it could have been removed.(what is it?)
The actuators (one circled in green) are missing all together and there is no holes or blanking plates on the manifold for it so it hasn't just been removed.
I'v attached a picture the item circled in red is not on the manifold but there is a blanking plate, so it could have been removed.(what is it?)
The actuators (one circled in green) are missing all together and there is no holes or blanking plates on the manifold for it so it hasn't just been removed.
02-20-2007, 11:36 AM
#6
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Location: Eastern PA
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Originally Posted by rwd-pog' post='860032' date='Feb 20 2007, 12:29 PM
Sorry i haven't got any good pictures with the inlet pipe removed. But just to make things more clear the actuators are not jammed open or blanked off there is no sign of them ever being on the lower intake manifold.
I'v attached a picture the item circled in red is not on the manifold but there is a blanking plate, so it could have been removed.(what is it?)
The actuators (one circled in green) are missing all together and there is no holes or blanking plates on the manifold for it so it hasn't just been removed.
In your diagram, the green are the actuators and the red is the ACV. Sounds like you have the ACV removed and blocked off with a plate. That should be OK. I think I see a header there so I'm assuming you don't need it anyway. There should be little arms where the actuators connect to that move clockwise/counterclockwise the actuator rods that move the port sleeves. See if you can turn these by hand. If not, your aux sleeves are stuck in place.
02-20-2007, 01:03 PM
#7
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Location: Mangaf, Kuwait
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why does this engine have a distributor? the vin plate on the fire wall says "FC", but wasnt the dizzy removed in place of a crank angle sensor, and 3 coil packs (2 singles and one double).
dont mean to jack the thread, but does this help in answering his question at all?
dont mean to jack the thread, but does this help in answering his question at all?
02-20-2007, 01:24 PM
#8
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Location: Mangaf, Kuwait
Posts: 147
sorry, just thought of something!
RWD: someones been in your engine before you, there are headers installed, and your smog pump is gone, which leads me to believe there's a full (cat-less) exhaust. (note: the cat is where the backpressure line origionates to actuate the ports) if it wasnt you that put the exhaust in or removed the air pump, then previous owner may have removed the big bulky "actuators" you're looking for, but underneath what you have circled in green is actually a small arm, not much longer than your fingernail (should be two of those) thats the actuator, the big bulky thing is a just spring housing, to close it when you let off the gas. in my car the spring housings are removed but the actuators are still in and wired (tied) about 1/2-3/4 way open, I found that to be a pretty good medium.
ok, now the stumble: I second kompressorlogic: sounds like a secondary fuel injector issue.
-get a multi-meter or one of those test lights
-disconnect one of the secondary fuel injectors and hook up the light (or the meter when set to VDC)
-start your car and rev it to about 4000rpm's (just real quick, you dont have to hold it)
the test light should fire up like the dickens, or read about 12.something VDC on the meter. do it for both.
this'll atleast tell you if they're getting the signal to fire. I have no idea what to do if they arent, or how to check the injector itself...
hope this helps bud.
RWD: someones been in your engine before you, there are headers installed, and your smog pump is gone, which leads me to believe there's a full (cat-less) exhaust. (note: the cat is where the backpressure line origionates to actuate the ports) if it wasnt you that put the exhaust in or removed the air pump, then previous owner may have removed the big bulky "actuators" you're looking for, but underneath what you have circled in green is actually a small arm, not much longer than your fingernail (should be two of those) thats the actuator, the big bulky thing is a just spring housing, to close it when you let off the gas. in my car the spring housings are removed but the actuators are still in and wired (tied) about 1/2-3/4 way open, I found that to be a pretty good medium.
ok, now the stumble: I second kompressorlogic: sounds like a secondary fuel injector issue.
-get a multi-meter or one of those test lights
-disconnect one of the secondary fuel injectors and hook up the light (or the meter when set to VDC)
-start your car and rev it to about 4000rpm's (just real quick, you dont have to hold it)
the test light should fire up like the dickens, or read about 12.something VDC on the meter. do it for both.
this'll atleast tell you if they're getting the signal to fire. I have no idea what to do if they arent, or how to check the injector itself...
hope this helps bud.
02-20-2007, 05:14 PM
#9
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Join Date: Feb 2007
Posts: 39
Originally Posted by hillbilly' post='860051' date='Feb 20 2007, 01:03 PM
why does this engine have a distributor? the vin plate on the fire wall says "FC", but wasnt the dizzy removed in place of a crank angle sensor, and 3 coil packs (2 singles and one double).
dont mean to jack the thread, but does this help in answering his question at all?
Looks like maybe somone put a FB motor in it. Which is 4-port. Which would explain the lack of port actuators. Look by the oil fill tube on the top of the rotor housing(the aluminum part). Does it say 12A or 13B?
EDIT:
Aslo you said in your orginal post "...84-92 are 13b's..." FC/13B started in 86.
The winsheild wiper motor is on the wrong side. The brake booster is on the wrong side....