Engine turns but will not fire up after re-adjusting the rocker arms - Team Camaro Tech
Engine General Engine Discussion.

 
LinkBack Thread Tools Display Modes
post #1 of 9 (permalink) Old Jul 27th, 09, 02:25 PM Thread Starter
Tech Team
 
Join Date: Nov 2005
Location: Oxnard, Ca
Posts: 59
Engine turns but will not fire up after re-adjusting the rocker arms

After driving a few miles I started to hear a ticking noise. I opened up the valve covers and noticed that one of the rocker arms was loose and some of the pushrods were spining easily and so I re-adjusted all the rocker arms. Now the engine turns but will not fire up and it sounds like something is stuck. I loosed up the rocker arms and re-adjusted them but still the engine will not start. Is it possible that I over tightened the rocker arms causing some of the lifters to get stuck in the lifter bores?
johnv805 is offline  
Sponsored Links
Advertisement
 
post #2 of 9 (permalink) Old Jul 27th, 09, 05:06 PM
Senior Tech
jeff
 
1SLOW64's Avatar
 
Join Date: Nov 2008
Location: Hot and Humid FL
Posts: 1,121
Re: Engine turns but will not fire up after re-adjusting the rocker ar

here is a great read.
http://www.centuryperformance.com/ad...h-spg-149.html
And yes you could have them to tight.

1969 X66 PROJECT:
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

2002 C5 COUPE ELECTRON BLUE SOLD
1987 BUICK GRAND NATIONAL SOLD
1964 CHEVY II 406 SOLD
1SLOW64 is offline  
post #3 of 9 (permalink) Old Jul 27th, 09, 05:15 PM
Gold Lifetime Member
Scott
 
Join Date: May 2005
Location: North Carolina
Posts: 343
Re: Engine turns but will not fire up after re-adjusting the rocker ar

Nice thread. Looks like the information this guy will need. Hopefully he will have the info on the cam that is installed. Could get interesting if not.
sspecialk is offline  
 
post #4 of 9 (permalink) Old Jul 27th, 09, 05:22 PM
Gold Lifetime Member
Scott
 
Join Date: May 2005
Location: North Carolina
Posts: 343
Re: Engine turns but will not fire up after re-adjusting the rocker ar

a couple of other things to check for may be a stud pulling out of the head if they are press in type. There could be damage to the lobe of the cam that the loose rocker arm works against.
sspecialk is offline  
post #5 of 9 (permalink) Old Jul 27th, 09, 07:36 PM
Senior Tech
Steiner
 
Join Date: Mar 2009
Location: Lyman, SC
Posts: 8,348
Re: Engine turns but will not fire up after re-adjusting the rocker ar

Yes, if you get them too tight you don't get any compression on startup. It is possible you started adjusting them with #6 at TDC instead of #1 if you did it after a couple of cocktails like I've been known to do.

Here's how I set mine with a not-too-radical cam:

Set the engine at TDC for #1. Verify by pulling the distributor cap to see that the rotor is at #1. Or since you have the covers off, rotate the engine clockwise so the marker passes through 0 on the timing tab and one of the #6 valves starts to rock, you are on TDC for #1. Then turn the motor back counter clockwise to the 0 point.

I find zero lash by doing the following:
Use a 0.0015 feeler gauge between the valve and rocker tip. Turn the rocker nut down by hand (if possible) while sliding the feeler gauge in and out. When there is a slight drag on the feeler gauge, stop. Tighten the rocker nut down 1/2 a turn from this point. (I use 3/8 turn on my lumpy cam). If you get a little tick, no biggie. I'd rather have one a tad loose than a tad tight.

Adjust the following rockers:
Intake: 1-2-5-7
Exhaust: 1-3-4-8

Rotate the engine one full turn clockwise to get the balancer mark back at 0. Adjust the following rockers:
Intake: 3-4-6-8
Exhaust: 2-5-6-7

'69 Camaro
Dart 400-AFR 195-224/224 HR-Powerjection III TB with F.A.S.T. Sportsman XFI
TKO 600-Moser 3.42-Detroit Truetrac
500hp/538lbft

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

'69 Camaro Beater-SFT 327-M20-Moser 4.10-sold
'02 Z/28 vert-stock-sold and totaled
Steiner is offline  
post #6 of 9 (permalink) Old Jul 29th, 09, 03:56 PM Thread Starter
Tech Team
 
Join Date: Nov 2005
Location: Oxnard, Ca
Posts: 59
Re: Engine turns but will not fire up after re-adjusting the rocker ar

I noticed that on some of the hydraulic lifters, the pushrod will not push back up after I push down on them. Does that mean that the spring inside the lifters are broken?
johnv805 is offline  
post #7 of 9 (permalink) Old Aug 1st, 09, 01:38 AM Thread Starter
Tech Team
 
Join Date: Nov 2005
Location: Oxnard, Ca
Posts: 59
Re: Engine turns but will not fire up after re-adjusting the rocker ar

got the engine to fire up. thanks
johnv805 is offline  
post #8 of 9 (permalink) Old Aug 4th, 09, 08:50 AM
Senior Tech
jeff
 
1SLOW64's Avatar
 
Join Date: Nov 2008
Location: Hot and Humid FL
Posts: 1,121
Re: Engine turns but will not fire up after re-adjusting the rocker ar

Quote:
Originally Posted by johnv805 View Post
got the engine to fire up. thanks
Well?......... What was the issue?

1969 X66 PROJECT:
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

2002 C5 COUPE ELECTRON BLUE SOLD
1987 BUICK GRAND NATIONAL SOLD
1964 CHEVY II 406 SOLD
1SLOW64 is offline  
post #9 of 9 (permalink) Old Aug 21st, 09, 09:36 AM Thread Starter
Tech Team
 
Join Date: Nov 2005
Location: Oxnard, Ca
Posts: 59
Re: Engine turns but will not fire up after re-adjusting the rocker ar

rocker arms were too tight
johnv805 is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Team Camaro Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address.
NOTE we receive a lot of registrations with bad email addresses. IF you do not receive your confirmation email you will not be able to post. contact support and we will try and help.
Be sure you enter a valid email address and check your spam folder as well.



Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome