Need help - Transmission will not engage - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

slider2828 · 05-31-2008, 07:50 PM

Sounds like a clutch issue or synchros.... Check when you press in the clutch pendal that the fork is moving? Check if the slave cynlinder is leaking..... Check if your clutch master cylinder is leaking as well.... Go from there....

jworks · 05-31-2008, 08:01 PM

I was in the same situation you were in. Gears in when cars off, won't go in when the cars on. Like Slider said it could be your slave cylinder but in my case unfortunately it was my clutch. When the transmissions shop took it apart, one of the springs on the clutch was broken.

racepar1 · 05-31-2008, 08:27 PM

Quote:

Originally Posted by slider2828

Sounds like a clutch issue or synchros.... Check when you press in the clutch pendal that the fork is moving? Check if the slave cynlinder is leaking..... Check if your clutch master cylinder is leaking as well.... Go from there....

SYNCHROS??? Ummmm, ok....... Anyways it is either a problem with the clutch master, clutch slave, clutch lines/hose, or the clutch itself. Look at the firewall under the master cyl under the dash. If you see fluid running down from the master then it is bad. Next get under the car and look at the slave cylinder. Pull back the rubber boot on the slave, if there is fluid in there than the slave is bad. Next visually inspect the clutch line, clutch hose, and the fittings for leaks. If all of that is good then it is a problem with the clutch itself. If you find a leak don't assume that that is the only problem. Inspect the entire system for leaks as it is totally possible that more than one component has gone bad. If you have to replace any part of the hydraulic system do yourself a favor and remove the dampener valve that mounts to the frame. It is a pain in the ass to bleed the system with that part installed. All you have to do is bend the clutch line, CAREFULLY don't kink it, so that it screws directly into the clutch hose.

eman · 05-31-2008, 08:30 PM

checked all. looked at the slave and had my brother-in-law push in the clutch. the slave is properly engaging the fork
didn't know if someone else had this problem (without it being the master/slave cylinder)

guess i'll have to seperate the tranny again. what gets me is it worked perfectly fine before going into the paint shop. (they only rolled it in and out of the shop during paint since we removed the fmic)

racepar1 · 05-31-2008, 09:57 PM

Maybe a frozen pilot bushing. That would keep the input shaft turning, but it would have to be pretty damn frozen to stall the car.

projectRDM · 06-01-2008, 12:53 AM

Broken clutch fork pivot.

g6civcx · 07-13-2008, 06:12 AM

Quote:

Originally Posted by eman

checked all. looked at the slave and had my brother-in-law push in the clutch. the slave is properly engaging the fork
didn't know if someone else had this problem (without it being the master/slave cylinder)

Just because you visually see the fork move, doesn't mean that the fork moves ENOUGH to disengage the clutch fully.

Back off the clutch pedal stopper bolt all the way out (remove it) and extend the master cylinder rod all the way out. This will give you full clutch pedal and master cylinder travel.

If that doesn't work, try bleeding the slave. If you have the clutch damper, remove the damper box and run the line straight from the master to slave.

95% of the time this will fix most clutch issue on 240s.

05-31-2008, 07:50 PM	#1
slider2828 Post Whore! Join Date: Oct 2004 Location: San Francisco, CA Posts: 6,040 Trader Rating: (13) Feedback Score: 13 reviews	Sounds like a clutch issue or synchros.... Check when you press in the clutch pendal that the fork is moving? Check if the slave cynlinder is leaking..... Check if your clutch master cylinder is leaking as well.... Go from there.... __________________ Turn and Burn!

06-01-2008, 12:53 AM	#6
projectRDM Post Whore! Join Date: Dec 2002 Location: Atlanta Age: 51 Posts: 13,812 Trader Rating: (12) Feedback Score: 12 reviews	Broken clutch fork pivot. __________________ FORMERLY R240NA Learn what's really going on and protect your assets now before they're gone forever: www.paypalsucks.com

05-31-2008, 08:01 PM	#2
jworks Zilvia Member Join Date: Sep 2007 Location: Los Angeles, CA Age: 38 Posts: 163 Trader Rating: (0) Feedback Score: 0 reviews	I was in the same situation you were in. Gears in when cars off, won't go in when the cars on. Like Slider said it could be your slave cylinder but in my case unfortunately it was my clutch. When the transmissions shop took it apart, one of the springs on the clutch was broken.

05-31-2008, 08:30 PM	#4
eman Leaky Injector Join Date: Dec 2005 Location: Texas Posts: 134 Trader Rating: (0) Feedback Score: 0 reviews	checked all. looked at the slave and had my brother-in-law push in the clutch. the slave is properly engaging the fork didn't know if someone else had this problem (without it being the master/slave cylinder) guess i'll have to seperate the tranny again. what gets me is it worked perfectly fine before going into the paint shop. (they only rolled it in and out of the shop during paint since we removed the fmic)

05-31-2008, 09:57 PM	#5
racepar1 Post Whore! Join Date: Jul 2007 Location: Simi Valley, CA Age: 42 Posts: 9,006 Trader Rating: (106) Rides Gallery: racepar1 Feedback Score: 106 reviews	Maybe a frozen pilot bushing. That would keep the input shaft turning, but it would have to be pretty damn frozen to stall the car.