Valve Question

R_Davis · 05-13-2008, 01:46 PM

Why would it be possible to adjust Intake and Exhaust Valves on #2 cylinder of a 1.7 and then the Intake and Exhaust Valves of #4 seem to be 'stuck' closed? ... that is; even when the adjustment screw is backed almost all the way out, there is no clearance to even get a feeler gauge in.
Aren't #2 and #4 actuated by the same cam?
Ideas?
Thanks,
Rick

RandyLok · 05-13-2008, 01:52 PM

There's a good tech article on this site somewhere. Also, the Krusty one has a nice procedure that is documented somewhere over at world

R_Davis · 05-13-2008, 05:14 PM

What the heck am I talking about?
This is what happens when you read too many technical documents on how to do something! I'm going back to basics and logically working this valve adjustment out on a piece of paper.
Tecnical Documents are good. Common sense is good too!
Rick

Dave at Pelican Parts · Dave at Pelican Parts's Garage

Yes, it is good. And surprisingly not that common....

If you follow the Krusty one's procedure, you will be doing just a couple of valves at a time on different cylinders, not both valves for two cylinders. With the factory procedure (the one I follow, BTW) you adjust both valves for only one cylinder. Sounds like you got crossed up between the two methods.

That's one reason that it's good to pick one method and stick with it.

--DD

Tobra · Tobra's Garage

I never went with Krusty's procedure because I had 20 years practice doing the valves on a bug before getting a 914

R_Davis · 05-14-2008, 04:54 AM

The Factory procedure on page 36 of the Haynes Manual is rather vague. It talks about how to adjust the Intake and Exhaust valves on one cylinder at a time but doesn't really explain the position of the impeller at any given time. It almost seems to be saying to adjust both valves with the cam shaft in the same spot. ?

I'm going to use Krusty's method as it requires less worry about TDC and relies on visually observing the physical movement of the valves as the engine is rotated.

Thanks Guys. And you're right Dave, I combined techniques from two different articles and thought I could develop my own. Forget that! And I didn't even have a beer on the toolbox.

I found Krusty's procedure at 914World and also here on PParts with pictures; which is much better.

Krusty's is at http://www.914world.com/bbs2/index.php?showtopic=28758&st=0

PParts' is at http://www.pelicanparts.com/techarticles/914_valve_adjust/914_valve_adjust.htm

Rick

R_Davis · 05-14-2008, 08:29 AM

I went back out after my last post and used the 'Krusty' method. After adjusting all valves in the order shown on his chart, I went back to the beginning and rechecked everything. I'm glad I did. #2 and #4 intake needed to be loosened a bit.

Reinstalled the valve covers and started the engine. Sounded great. Set the timing and took it out for a little drive through it's paces ... Little too advanced, so did a roadside, redneck adjustment and it actually runs like a new engine.

Thanks for everything, guys. Now I'm off to screw up something else

Rick