blown apex seal ?
#1
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blown apex seal ?
sooo my car is acting weird and i have a video to go with it but here is my story i was driving my car n rev matched it into 2nd all of a sudden i felt a lack of power n car will not rev past 3k also kept stalling out even with clutch in very lucky to get her home
car- 91 NA fc
mods-
ACT HD clutch kit
racing flywheel from mazdatrix
prev owner replaced stock airbox with a cone
<iframe title="YouTube video player" width="480" height="390" src="http://www.youtube.com/embed/WvweWCuxZjc" frameborder="0" allowfullscreen></iframe>
this video is with me holding it at around 4k with clutch in with the clutch in i can freely rev the car from 4k up once it goes under 4k it stalls also putting it into gear car stalls in this video i let off the clutch while hittin gas
<iframe title="YouTube video player" width="480" height="390" src="http://www.youtube.com/embed/efyrUn4n--Q" frameborder="0" allowfullscreen></iframe>
also the car shoots lots of flames when its being revd high n sparks came out the exhaust like u see from those firework sprinkler wand things
thanks for the help
car- 91 NA fc
mods-
ACT HD clutch kit
racing flywheel from mazdatrix
prev owner replaced stock airbox with a cone
<iframe title="YouTube video player" width="480" height="390" src="http://www.youtube.com/embed/WvweWCuxZjc" frameborder="0" allowfullscreen></iframe>
this video is with me holding it at around 4k with clutch in with the clutch in i can freely rev the car from 4k up once it goes under 4k it stalls also putting it into gear car stalls in this video i let off the clutch while hittin gas
<iframe title="YouTube video player" width="480" height="390" src="http://www.youtube.com/embed/efyrUn4n--Q" frameborder="0" allowfullscreen></iframe>
also the car shoots lots of flames when its being revd high n sparks came out the exhaust like u see from those firework sprinkler wand things
thanks for the help
#4
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do you suggest getting an afm n tps ??
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#8
Super-Pinoy
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vacuum leaks dont always show up in the most convient locations, you may have to remove your Upper intake manifold. and about the sparks ... thats weird, never heard of that before..... maybe there is something loose inside a cat ( i have seen brand new cars that had stuff bang against each other in the cat )
#9
MECP Certified Installer
Sparks?
I was racing some guy in my old S10 and my cat overheated, and basically did the same thing you're describing. sparks, few fireballs rolling down the road.
Pulled the cat and it had shattered into a million pieces.
Don't think that is your problem though. Could be just a problem caused by the primary problem you are having.
I was racing some guy in my old S10 and my cat overheated, and basically did the same thing you're describing. sparks, few fireballs rolling down the road.
Pulled the cat and it had shattered into a million pieces.
Don't think that is your problem though. Could be just a problem caused by the primary problem you are having.
#11
Sharp Claws
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don't waste your time, i can tell by the uneven cranking pulses that you have 1 dead rotor with 0 compression. most likely the rear rotor.
yes, you need a rebuild with likely a new/used rotor and rotor housing.
if you want to verify it go get a compression tester, no need to do the fancy bounce test with the schrader valve removed. i can pretty much guarantee you one rotor is only going to read maybe 20psi max total peak compression.
sorry for the bad news but i'd rather save you the time of doing all those tests for nothing.
the flames are from unburnt fuel from the dead rotor which is being fed fuel as if it had full sealing compression which burns off in the exhaust stream rather than inside the engine. the sparks are likely debris from the metal/metal contact still going on inside the compromised rotor housing, assuming you have gutted cats(or else you wouldn't see flames or sparks, it would be collecting inside the cat and cutting it up like a ribbon).
yes, you need a rebuild with likely a new/used rotor and rotor housing.
if you want to verify it go get a compression tester, no need to do the fancy bounce test with the schrader valve removed. i can pretty much guarantee you one rotor is only going to read maybe 20psi max total peak compression.
sorry for the bad news but i'd rather save you the time of doing all those tests for nothing.
the flames are from unburnt fuel from the dead rotor which is being fed fuel as if it had full sealing compression which burns off in the exhaust stream rather than inside the engine. the sparks are likely debris from the metal/metal contact still going on inside the compromised rotor housing, assuming you have gutted cats(or else you wouldn't see flames or sparks, it would be collecting inside the cat and cutting it up like a ribbon).
Last edited by RotaryEvolution; 02-15-11 at 04:08 PM.
#13
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don't waste your time, i can tell by the uneven cranking pulses that you have 1 dead rotor with 0 compression. most likely the rear rotor.
yes, you need a rebuild with likely a new/used rotor and rotor housing.
if you want to verify it go get a compression tester, no need to do the fancy bounce test with the schrader valve removed. i can pretty much guarantee you one rotor is only going to read maybe 20psi max total peak compression.
sorry for the bad news but i'd rather save you the time of doing all those tests for nothing.
the flames are from unburnt fuel from the dead rotor which is being fed fuel as if it had full sealing compression which burns off in the exhaust stream rather than inside the engine. the sparks are likely debris from the metal/metal contact still going on inside the compromised rotor housing, assuming you have gutted cats(or else you wouldn't see flames or sparks, it would be collecting inside the cat and cutting it up like a ribbon).
yes, you need a rebuild with likely a new/used rotor and rotor housing.
if you want to verify it go get a compression tester, no need to do the fancy bounce test with the schrader valve removed. i can pretty much guarantee you one rotor is only going to read maybe 20psi max total peak compression.
sorry for the bad news but i'd rather save you the time of doing all those tests for nothing.
the flames are from unburnt fuel from the dead rotor which is being fed fuel as if it had full sealing compression which burns off in the exhaust stream rather than inside the engine. the sparks are likely debris from the metal/metal contact still going on inside the compromised rotor housing, assuming you have gutted cats(or else you wouldn't see flames or sparks, it would be collecting inside the cat and cutting it up like a ribbon).
#14
Sharp Claws
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will require swapping the timing cover, or if you premix your fuel it isn't necessary and you can just strap the OMP out of the way while leaving it hooked up to the electrical connections. that or if you have an Rtek chipped ECU it should be a direct swap as it eliminates the limp mode.
retain everything from the S5 engine though.
retain everything from the S5 engine though.
#15
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will require swapping the timing cover, or if you premix your fuel it isn't necessary and you can just strap the OMP out of the way while leaving it hooked up to the electrical connections. that or if you have an Rtek chipped ECU it should be a direct swap as it eliminates the limp mode.
retain everything from the S5 engine though.
retain everything from the S5 engine though.
#17
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This seems a little familiar. I think this happened to me before. Check if all your sensors and plugs are plugged in. My intake sensor was loose a little bit and caused my car to react like that.
#18
Mechanical Engineering
don't waste your time, i can tell by the uneven cranking pulses that you have 1 dead rotor with 0 compression. most likely the rear rotor.
yes, you need a rebuild with likely a new/used rotor and rotor housing.
if you want to verify it go get a compression tester, no need to do the fancy bounce test with the schrader valve removed. i can pretty much guarantee you one rotor is only going to read maybe 20psi max total peak compression.
sorry for the bad news but i'd rather save you the time of doing all those tests for nothing.
the flames are from unburnt fuel from the dead rotor which is being fed fuel as if it had full sealing compression which burns off in the exhaust stream rather than inside the engine. the sparks are likely debris from the metal/metal contact still going on inside the compromised rotor housing, assuming you have gutted cats(or else you wouldn't see flames or sparks, it would be collecting inside the cat and cutting it up like a ribbon).
yes, you need a rebuild with likely a new/used rotor and rotor housing.
if you want to verify it go get a compression tester, no need to do the fancy bounce test with the schrader valve removed. i can pretty much guarantee you one rotor is only going to read maybe 20psi max total peak compression.
sorry for the bad news but i'd rather save you the time of doing all those tests for nothing.
the flames are from unburnt fuel from the dead rotor which is being fed fuel as if it had full sealing compression which burns off in the exhaust stream rather than inside the engine. the sparks are likely debris from the metal/metal contact still going on inside the compromised rotor housing, assuming you have gutted cats(or else you wouldn't see flames or sparks, it would be collecting inside the cat and cutting it up like a ribbon).
Exactly!
This sounds like my old S4 motor that had blown both rotors and had very uneven pulses.
A botched rev match or very sudden changes in RPM (like slapping a modified clutch) is a good way to break seals.
you could always try and run it as a single rotor!
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