 Valve adjustment question, Valve clearance doesn't seem right |
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| McMark |
 May 23 2009, 09:05 PM
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#21
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914 Freak!  Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None  |
Yup. Hydraulics. The ratwell site has a good writeup on adjusting the lifters. The lifters need to 'pump up' before you can adjust them correctly. Sometimes you have to run the motor with 'loose' valves to allow the lifters to pump up, and then adjust the valves. Read the Ratwell page on adjustment. It's spot on.
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| jcd914 |
May 23 2009, 09:49 PM
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#22
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Advanced Member Group: Members Posts: 2,081 Joined: 7-February 08 From: Sacramento, CA Member No.: 8,684 Region Association: Northern California |
There is s trick to adjusting hydraulic lifters that have air in them (not pumped up).
They all have an internal spring that pushes the piston the push rod sits on out toward the rocker. This spring does not have much tension so the piston is easily pushed in as you try to adjust out the clearance. If you loosen the adjuster until you know you have a gap and then gently turn the adjuster while twisting the push rod with you finger tips, you can feel the push rod tighten up slightly as you take out all the clearance and start pushing against the spring. You probably need to tighten and loosen a couple times to get the feel for it. Once you can get zero clearance then you can turn in 2 turns to set them correctly. I learned this from a Chevy mechanic and it works quite well. Twisting the push rods on a 914 is a bit tough because of the space but what isn't. Good Luck Jim |
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| Cap'n Krusty |
May 24 2009, 12:29 AM
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#23
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Cap'n Krusty Group: Members Posts: 10,794 Joined: 24-June 04 From: Santa Maria, CA Member No.: 2,246 Region Association: Central California |
Isn't that what I said? The Cap'n
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| tag |
May 24 2009, 06:57 AM
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#24
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Member Group: Members Posts: 67 Joined: 5-December 08 From: Point, Texas Member No.: 9,815 Region Association: None |
Thanks Cap'n, Jim and McMark, I'll re-adjust the lifters today or tomorrow and post back after I button her up and get her started. (IMG:style_emoticons/default/beer3.gif) (IMG:style_emoticons/default/driving.gif) (just kidding) The engine oil runs hot at 230° so I removed the tin to see if there was alot of debris blocking the cooler but there wasn't, there was however leaves packed in No. 3 and No. 1 (i hope this helps a little)
Thanks again |
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| tag |
May 25 2009, 03:59 PM
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#25
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Member Group: Members Posts: 67 Joined: 5-December 08 From: Point, Texas Member No.: 9,815 Region Association: None |
Well I've got it all back together, now it runs really rough and wont stay running without a vacuum hose disconnected (IMG:style_emoticons/default/mad.gif) (after warmed up). So rich it hurts my eyes. Does this sound normal after a valve adjustment? Would doing another tune up fix this problem? Please help
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| Cupomeat |
May 26 2009, 02:01 PM
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#26
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missing my NY 914 in VA Group: Members Posts: 1,336 Joined: 26-November 07 From: Oakton VA Member No.: 8,376 Region Association: MidAtlantic Region |
This does not sound like a valve adjustment issue...
What is your induction? Is it carbs or D-Jet (I am assuming D-Jet as it is a 76 2.0L) |
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| tag |
May 26 2009, 06:35 PM
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#27
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Member Group: Members Posts: 67 Joined: 5-December 08 From: Point, Texas Member No.: 9,815 Region Association: None |
QUOTE(Cupomeat @ May 26 2009, 12:01 PM)  This does not sound like a valve adjustment issue... What is your induction? Is it carbs or D-Jet (I am assuming D-Jet as it is a 76 2.0L) Djet |
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| Cap'n Krusty |
May 26 2009, 06:50 PM
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#28
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Cap'n Krusty Group: Members Posts: 10,794 Joined: 24-June 04 From: Santa Maria, CA Member No.: 2,246 Region Association: Central California |
Is the MPS hose plugged into the intake manifold? The Cap'n
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| tag |
May 26 2009, 07:13 PM
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#29
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Member Group: Members Posts: 67 Joined: 5-December 08 From: Point, Texas Member No.: 9,815 Region Association: None |
QUOTE(Cap'n Krusty @ May 26 2009, 04:50 PM) Is the MPS hose plugged into the intake manifold? The Cap'n I'm pretty sure I put all the hoses in the same place i removed them, but i could be wrong.  |
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| tag |
May 26 2009, 07:14 PM
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#30
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Member Group: Members Posts: 67 Joined: 5-December 08 From: Point, Texas Member No.: 9,815 Region Association: None |
QUOTE(Cap'n Krusty @ May 26 2009, 04:50 PM) Is the MPS hose plugged into the intake manifold? The Cap'n And  |
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| orange914 |
May 26 2009, 07:39 PM
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#31
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http://5starmediaworks.com/index.html Group: Members Posts: 3,371 Joined: 26-March 05 From: Ceres, California Member No.: 3,818 Region Association: Northern California |
QUOTE(Cap'n Krusty @ May 26 2009, 04:50 PM) Is the MPS hose plugged into the intake manifold? The Cap'n does it hold vacuum?? p.s. red high temp. (or any other sily,cone), on intake gaskets has caused many a headache. beside oozing into carb or throttlebody passages and plugging them up, most silicone boogers up (IMG:style_emoticons/default/barf.gif) and looses all sealing when fuel and oil mixes with it. copper seal spray (permatex) works great mike |
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