sticking throttle syndrome..

[halz]

OK...smooth acceleration off idle is something I am yet to achive. When I press the pedal there is no movement ...until I press a little harder... and then...vroom! Too much! I think the whole throttle assembly (from pedal to carbs) needs to be dismantled, cleaned, lubed and reassembled.

I have disconnected a few of the nylon ball joint linkages in the engine bay and they are dry and dirty inside. What I plan to do is remove all of these, clean in petrol to remove old grease and then rinse in water to remove petrol. When all of the joints are clean and dry I will reassemble using graphite as a lubricant.

Has anyone else ben through this procedure? Any tips?

[2ManyZs]

The only thing I would advise against is the graphite to lube the plastic or nylon joints. It would more than likely end up slowly grinding away the nylon. I'd use either a moly grease, or plain bearing grease and just watch them, and when they start getting dirty, clean them and do it all over again.

Graphite between metal and nylon, I think the nylon would wear out prematurely.

And I think somewhere in all the myriad of posts is one by Daniel that describes bending the one the runs horizontal to the firewall slightly that will give it a better arc when using the throttle. With it being straight, it is pushing in too straight a line when you first apply the throttle. If I can find the thread I'll post the link if you don't find it first.

[halz]

2many,

I was trying to think of an alternative to 'normal' grease which is a great dirt attractor. Graphite seemed like a good idea because it is a dry lubricant. ... a friend alto mentioned 'copper' grease..? What properties does molybdenum grease have to recommend it?

Sorry for all the Q?s

Hayden.

[Mr Camouflage]

Theres a write up somewhere on how to adjust the linkage to avoid this. The geometry of the linkages is such that it take a lot of force to get it moving from the idle, rest position so you jet that sudden jump in revs.

I'll have a look for it tonight.

[Z Kid]

White grease is the go, not sure about what its technical name is (may even be white grease) but its meant to be better lubing and attract less dust etc.

[2ManyZs]

Moly and/or the white lithium grease is usually quite a lot lighter than the normal wheel bearing grease. It still will attract and hold dirt, but it's a lot lighter grease and won't be affected by cooler temps like the heavier grease will. Plus, any excess will likely drop off instead of making a great big gob that attracts and holds a lot of dirt and other contaminants.

I've use the white lithium grease on mine with OK results. The same light grease you might use on bearings when installing them in a new engine. You might have to re-apply it a little more often, but, you will end up keeping the linkages a lot cleaner if you are forced to clean and grease it more often right?

Ha, found it.....here ya go, hope this helps explain what we were trying to say...

http://www.classiczcars.com/forums/showthread.php?s=&threadid=5545

[halz]

Guys,

I found the post with Daniel's solution. It looks like a good idea and I'm going to pop the bonnet tonight and have a look. I like his idea more than the Zhome.com tech solution. What they suggest is to make a significant change at the bell-crank which effectively increases the amount of pedal travel for a give amount of throttle opening...it effectively reduces the sensitivity of the whole system.

I'm hoping I can make the ppropriate 'bend' in the linkage without the need to go hunting for 280zx parts...

Hayden.

PS: look here for full desc: http://www.classiczcars.com/forums/showthread.php?s=&goto=newpost&threadid=5545