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Reverse gear crunching

Posted: Thu Jan 28, 2016 4:21 am
by Jewells
I have a 2010 Kizashi only has 100 thousand klm's on the clock and for the last month is has been getting hard to select reverse gear it will crunch and then jump into gear had it checked by a clutch specialist and they seem to think that it is a internal problem has anyone else had similar issues to this any help would be great.

Thanks

John

Re: Reverse gear crunching

Posted: Thu Jan 28, 2016 10:57 am
by Woodie
That sounds like clutch to me. Probably needs to be bled. Do you have floormats? Make sure they're not under the pedal. Press the clutch pedal firmly to the floor and wait a couple of seconds, is it any better? Lean the shifter into another gear before going for reverse, that should stop the rotation, but if it's lurching as you put it in, then the clutch is still driving.

Re: Reverse gear crunching

Posted: Thu Jan 28, 2016 2:38 pm
by KuroNekko
Try putting the transmission in 1st gear while the car is fully stopped and then directly shifting to Reverse. Like Woodie wrote, make sure the clutch pedal is fully depressed to the floor. 100,000 km is 60,000 miles and if you haven't replaced the manual transmission fluid yet, it's overdue. I recommend getting a fully synthetic manual trans gear oil. While you or a mechanic is at it, bleed the clutch line. It's similar to bleeding the brakes as they use the same fluid.
I'll be changing my manual transmission fluid this Spring to Red Line MTL.

Re: Reverse gear crunching

Posted: Sat Jan 30, 2016 5:23 pm
by redmed
I have had the same thing on my 2010 Kizashi since it was new. Sometimes it would go into reverse just fine other times you get grinding gears and it pops out back into neutral. Someone here bled the clutch and it solved it. I plan to bleed the clutch, when it gets warmer, but so far I have discovered that if I shift into first before shifting into reverse it rarely does that.

Re: Reverse gear crunching

Posted: Mon Dec 21, 2020 1:37 pm
by LeoFromDE
Did anyone here fix/identify cause of the problem? Already tried bleeding clutch and changing gear oil but it didn't do the trick for me

Re: Reverse gear crunching

Posted: Mon Dec 21, 2020 2:31 pm
by old tech
If grinding reverse gear and the clutch pedal is getting fully depressed with a reasonable idle engine idle speed ,and the car has a good bit of miles on the clock. You may have a clutch disc that has worn down far enough that the relief cuts are no longer deep enough to spin a bit of air in to break suction between clutch face and flywheel/pressure plate faces. Do make sure hydraulic side is clean and bled properly first.

Re: Reverse gear crunching

Posted: Tue Dec 22, 2020 10:00 am
by LeoFromDE
Hmm the other gears go in perfectly though and reverse goes in fine if I pull the gear knob into gear and lift the clutch a little. Does this still sound like a clutch problem? Someone in another thread stated that this behavior is even normal because the Kizashi doesn't have a synchronizer ring for reverse. Really not sure what to think

Re: Reverse gear crunching

Posted: Tue Dec 22, 2020 3:41 pm
by old tech
I thought the complaint was grinding when trying to engage reverse with clutch fully depressed. Sorry. It now sounds like the finicky reverse engagement is due to coarse non synchronized mating and wiggling the clutch pedal is perfectly acceptable.

Re: Reverse gear crunching

Posted: Tue Dec 22, 2020 5:38 pm
by LeoFromDE
old tech wrote:I thought the complaint was grinding when trying to engage reverse with clutch fully depressed. Sorry. It now sounds like the finicky reverse engagement is due to coarse non synchronized mating and wiggling the clutch pedal is perfectly acceptable.
Alright thanks for your answer :) I mean I didn't really describe my problem and just assumed the thread starter had the same issue. I'm glad that it seems like nothing is really broken but instead it's just a thing with this transmission. I was kinda worried. I had a troublesome BMW before and I was worried it's going bad all over again