Timing troubles
07-11-04, 06:09 PM
#1
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Timing troubles
Hey guys,
I just got an 1989 GXL with the 13B NA engine. I've done wires, plugs, filters, oil etc...etc. I'm trying to set the timing to get her to run right and something isn't working out for me. I'm not getting a reaction from my timing light on the L1 wire but do get a reaction from the T1 wire. I belive someone has removed the Crank Angle Sensor before and didn't properly put it back. I've lined up the red and yellow marks several times with the sensor gear and shaft aligned into different positions and still can not get the car to run correct. I'm hoping the car is just really out of time because it has NO get up and go and takes forever to get into the upper RPM band. Any help would be great! I'm just learning about the rotor motors so try to explain it in simple terms if possible.
HELP!
Derrick Jewell
derrick@specterautomotives.com
I just got an 1989 GXL with the 13B NA engine. I've done wires, plugs, filters, oil etc...etc. I'm trying to set the timing to get her to run right and something isn't working out for me. I'm not getting a reaction from my timing light on the L1 wire but do get a reaction from the T1 wire. I belive someone has removed the Crank Angle Sensor before and didn't properly put it back. I've lined up the red and yellow marks several times with the sensor gear and shaft aligned into different positions and still can not get the car to run correct. I'm hoping the car is just really out of time because it has NO get up and go and takes forever to get into the upper RPM band. Any help would be great! I'm just learning about the rotor motors so try to explain it in simple terms if possible.
HELP!
Derrick Jewell
derrick@specterautomotives.com
07-11-04, 06:17 PM
#2
First thing to check is compression if you have no power. You don't even need a compression checker - pull a plug (upper or lower, doesn't really matter), turn the engine over with the water pump pulley, and listen. You should hear a solid "chuff" every full crankshaft rotation. With a front & rear plug removed, you should get a chuff every half turn. If any are missing, you most likely have a blown apex seal. Rebuild. If you have fairly consistent chuffs, the internals are at least all non-broken.
However, what you've described is also consistent with the car running only on the trailing plugs. No power, and the light not picking anything up on the front wires is certainly suspicious. Double check the grounding on the leading coil (in the front of the engine bay). Remove it, clean up the grounds, remount it. Also check the connections going to the coil - they should be connected and in decent condition.
Ignition troubleshooting on a rotary is a bit different from a regular piston engine because you have two plugs per rotor (leading and trailing), and they fire 15 degrees apart. However, it's still an ignition system, and if something's not working, standard troubleshooting applies.
Do you get a signal on the L2 wire, or are both sides dead? If both sides are dead, then you most likely either have bad connections to the leading coil pack, or a bad coil pack. Putting some known good plug wires in and cleaning or replacing the plugs wouldn't be a bad idea either.
-=Russ=-
However, what you've described is also consistent with the car running only on the trailing plugs. No power, and the light not picking anything up on the front wires is certainly suspicious. Double check the grounding on the leading coil (in the front of the engine bay). Remove it, clean up the grounds, remount it. Also check the connections going to the coil - they should be connected and in decent condition.
Ignition troubleshooting on a rotary is a bit different from a regular piston engine because you have two plugs per rotor (leading and trailing), and they fire 15 degrees apart. However, it's still an ignition system, and if something's not working, standard troubleshooting applies.
Do you get a signal on the L2 wire, or are both sides dead? If both sides are dead, then you most likely either have bad connections to the leading coil pack, or a bad coil pack. Putting some known good plug wires in and cleaning or replacing the plugs wouldn't be a bad idea either.
-=Russ=-
07-11-04, 08:36 PM
#5
Then you most likely have a bad ignition coil (or a bad connection going to it).
Check the connections and reseat the grounds (remove, clean, reconnect). If that doesn't fix it, you'll probably need to get another coil. Shouldn't be too difficult to find in the For Sale section.
-=Russ=-
Check the connections and reseat the grounds (remove, clean, reconnect). If that doesn't fix it, you'll probably need to get another coil. Shouldn't be too difficult to find in the For Sale section.
-=Russ=-
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