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85' Caprice Classic

 
pepsi1
I mow my lawn and find Chevys
Posts: 1718
Joined: 09/11
Posted: 08/29/12 12:15 AM

You can actually fire that engine up without the timing case cover on. You may get a little oil from the front cam bearing,and maybe not. Remember you only want to start the engine not run it for an hour.

It will atleast tell you what you did right and/or wrong. If you follow the steps as 68scott and Wayne posted you should not have a problem...Pay attention to what your doing and if you purchased a good timing chain set there are diagrams inside those boxes....Come on it's a small block chevy not a ford or mopar...LOL...

Bob  

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fresh886
I love my Chevy Chevette!
Posts: 24
Joined: 08/12
Posted: 08/29/12 01:34 PM

my last question before doing what you guys showed me,what are the chances that i may have damaged my cam or a valve, how would i know without taking off the cylinder  

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68scott385
I mow my lawn and find Chevys
Posts: 1994
Joined: 10/09
Posted: 08/30/12 05:19 AM

compression test or leak-down test AFTER getting the cam timed right  
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fresh886
I love my Chevy Chevette!
Posts: 24
Joined: 08/12
Posted: 08/30/12 08:59 AM

Ok i did what you guys showed me to do, the engine started up but its skipping a little and when ever i mash the gas it makes a popping sound, could i be off a tooth? I twist the dizzy to see if it would run better but nothing happened, it either cuts off or idles up high  

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68scott385
I mow my lawn and find Chevys
Posts: 1994
Joined: 10/09
Posted: 08/30/12 05:31 PM

does it pop out through the carb?

have you verified the firing order? i.e. 5&7 not crossedup, right on one end but not the other

it doesn't take alot of twist to move the timing way too far in either direction...best to use a timing light and set the distributor at the factory suggested setting...the motor is stock, correct?  
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fresh886
I love my Chevy Chevette!
Posts: 24
Joined: 08/12
Posted: 08/30/12 05:58 PM

yes its stock and yes its popping thru the carb  

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fresh886
I love my Chevy Chevette!
Posts: 24
Joined: 08/12
Posted: 08/30/12 06:06 PM

even tho i have 5 an 7 correct could it still be switched ?  

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68scott385
I mow my lawn and find Chevys
Posts: 1994
Joined: 10/09
Posted: 08/30/12 06:48 PM

is the timing set correctly? if no, then do it, if yes then...

time to sit down,

pull both valve covers and turn the motor over by hand or wrench/socket

look at the rocker arms, find the one(s), likely one of the exhaust rockers, that isn't moving as much as the others...like Sesame Street, which one of these isn't like the others

in my experience, popping through the carb indicates and exhaust valve that isn't adjusted right or an exhaust lobe on the cam that is wiped out

could also be an intake valve hanging open and when the plug fires the flame front comes right back out the top...it follows the path of least resistance like water, it's natural instinct is not to push the piston down but expand where ever it can

how many miles on the motor?  
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fresh886
I love my Chevy Chevette!
Posts: 24
Joined: 08/12
Posted: 08/30/12 07:04 PM

almost 2ook  

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68scott385
I mow my lawn and find Chevys
Posts: 1994
Joined: 10/09
Posted: 08/30/12 07:22 PM

sounds like it's time to make hard choices

GOOD LUCK  
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fresh886
I love my Chevy Chevette!
Posts: 24
Joined: 08/12
Posted: 10/01/12 12:17 PM

Ok guys, i've removed the valve cover only to find that a couple of the rocker arms were not seated on the valve springs properly, a couple of the push rods were bent as well, could this have been my issue the whole time?  

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pepsi1
I mow my lawn and find Chevys
Posts: 1718
Joined: 09/11
Posted: 10/01/12 03:05 PM

Look on the firewall for a Black and Brown wire connector. You need to disconnect that wire on your type GM distributor. That year you have does not have a vacuum advance. You can turn the ditributor all you want.

Anyway disconnect those wires and set your timing accordingly. Look an the radiator support there should be a diagram. If not pick up a service manual at a good Parts supplier. It's not timing an engine with a vacuum advance didtributor. Good Luck.

Bob  

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68scott385
I mow my lawn and find Chevys
Posts: 1994
Joined: 10/09
Posted: 10/01/12 03:35 PM

put good parts back in, get everything adjusted correctly, and start it, see if it runs right or still has problems

did you do a leak-down test?  
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fresh886
I love my Chevy Chevette!
Posts: 24
Joined: 08/12
Posted: 10/05/12 04:44 AM

i think i know hat the issue is now, i think maybe the carburetor gasket broke  

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68scott385
I mow my lawn and find Chevys
Posts: 1994
Joined: 10/09
Posted: 10/05/12 07:17 AM

THE carb gasket?

What carb, i.e; brand, tpye?

Which gasket?  
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