Kia Forte Forum banner
1 - 20 of 22 Posts

· Registered
Joined
·
746 Posts
Discussion Starter · #1 ·
Mods, was not sure where to start this as it covers all models.
And, I didnt want it to get buried or be like hijacking another thread.

I pooled some info gathered from the internet about Clutch Delay Valve or CDV for short. Many other vehicles have talked/posted on other forums the same mod (basically) for the same surrounding issues. A shift delay from 1st - 2nd. Or when accellerating. Its most noticable when parallel parking & can be infuriating. As it gets very "jerky". :)

CDV - Theory of Operation
The Clutch Delay Valve (CDV) is a one-way restrictor installed by the factory between the clutch slave cylinder and clutch master cylinder. It "delays" the engagement of the clutch, much like old record players used a damped tone-arm to gently lower the needle onto the surface of a record.
Because of this valve, no matter how quickly you lift your foot off the clutch pedal, the clutch engages the flywheel at a constant (slow) rate. In theory, it can save the driveline from shock, were an inexperienced (or immature) driver may dump the clutch at high RPM. But in practice, all it does is prematurely wear out the clutch and turn experienced drivers into people who, despite 20 years of practice, cannot shift gears smoothly. During parallel parking maneuvers, the delay can be infuriating, causing constant clutch slippage. And during hard acceleration, the large amount of clutch slippage can greatly shorten the life of your clutch. During normal, sedate driving, the shift from first into second gear is often jerky, leading passengers to question your skill. As the driver, you can see your passengers' heads bobbing back and forth during every shift!

Here is a thread for 2.0l MT shift dealay hesitation:
Forte 2.0L Manual Transmission shifting problem

Here is a thread about the CDV mod:
Clutch mods?
 

· Registered
Joined
·
39 Posts
Built in slip save the drive line ... kill the clutch, piss off the driver .... unless the drive line is made out of glass it should handle a few big dumps with out a problem...

Is this valve only interfering in one direction? or it is slowing movement in both though oh the forte?
 

· Premium Member
Joined
·
1,533 Posts
i agree sounds like remote44 needs some driving lessons... lol
I hope you wouldn't comment on your customers like that. However, It's an issue with the car. While I stalled this car more than I have stalled any other car in the first two weeks I owned it, I did get the hang of it, and only find myself stalling/getting a jumpy start here and there when i'm not paying attention.. however... with all other manuals i've owned ... never HAD to pay attention to shift... and there lies the issue.

just my 2 cents
 

· Registered
Joined
·
533 Posts
I agree the first two weeks were complete hell especially if I had to go downtown.... I had to pay for parking in the garages every time because I couldn't and still can't parallel park with this jumping around on my hills.. This is my first 6spd that I've bought, but I have learned over the last year on three different vehicles and had no problem what-so-ever with parking or even day to day driving... I don't know why it's so bad or what can be done to permanently fix this but hopefully something is done soon... I've had it for a month and now as beast said I only stall out when I don't pay attention... working on that one still lol...
 

· Premium Member
Joined
·
982 Posts
... While I stalled this car more than I have stalled any other car in the first two weeks I owned it, I did get the hang of it, and only find myself stalling/getting a jumpy start here and there when i'm not paying attention.. however... with all other manuals i've owned ... never HAD to pay attention to shift... and there lies the issue.

just my 2 cents
I couldn't agree anymore... the only good thing that comes out of this (at least for me, if you could consider it a good thing) is that when I drive other people's stick shift vehicles they are surprised at how fast I'm able to get the hang of it.
 

· Registered
Joined
·
211 Posts
Honestly, I'm hardly a stick-shift expert (1 year of daily stick driving last month), but I never had any real problems with the clutch on this car (and neither did my friends and family). Is it a little different than other sticks that I've driven? Yes. Is it a problem? Not for me.

Of course, it may be a problem for some. Maybe it's not a problem for me due to my lack of experience.
 

· Registered
Joined
·
26 Posts
I hope you wouldn't comment on your customers like that. However, It's an issue with the car. While I stalled this car more than I have stalled any other car in the first two weeks I owned it, I did get the hang of it, and only find myself stalling/getting a jumpy start here and there when i'm not paying attention.. however... with all other manuals i've owned ... never HAD to pay attention to shift... and there lies the issue.

just my 2 cents
actually remote44 is one my my customers lmao... :)
 

· Registered
Joined
·
973 Posts
Honestly, I'm hardly a stick-shift expert (1 year of daily stick driving last month), but I never had any real problems with the clutch on this car (and neither did my friends and family). Is it a little different than other sticks that I've driven? Yes. Is it a problem? Not for me.

Of course, it may be a problem for some. Maybe it's not a problem for me due to my lack of experience.
I'm in the exact same boat here, this is just my second 5 speed car and I've had 6 or 7.
I notice it is a little jumpy though, especially 1st to second and taking off very slowly.
no problems at all with at least half open throttle lol
 
1 - 20 of 22 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top