The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 09-19-2019, 12:29 AM   #1
Klassen kustoms
Registered User
 
Join Date: Jan 2019
Location: Williams lake bc
Posts: 43
Need help

So normally I can get this stuff right away and not have much issue but this truck is just stumping me!
It’s an 80 stepside with a 305 i got off a buddy for 350$... I couldn’t say no!

When I got the truck it ran rough but still ran ( almost acted like weak spark ) but it had a massive leak out of the intake manifold... well I got all that fixed, at the time I was 90% sure I put the engine to tdc .. the previous owners were not very smart with that truck so it doesn’t have any timing marks anywhere or a timing pointer

Well fast forward and I get it all back together .. first time it was 180 out so I fixed that and it still won’t start ... I’ve tried new plugs, a different ground cable ( off a running truck ), a different cap, and it’s gotten better... now it’s shooting a bit of fire out the exhaust and huffing a bit of smoke here and there out the tailpipe ... but still nothing and the spark is still orange

Could it be out of timing ? I’ve messed with it a lot trying to get it right
Or could it be the distributor ?
Attached Images
 
Klassen kustoms is offline   Reply With Quote
Old 09-19-2019, 06:37 AM   #2
cadillac_al
Registered User
 
Join Date: Oct 2013
Location: Maine
Posts: 2,371
Re: Need help

Most likely timing is still off. You will have to verify TDC as best you can and try to time it by ear. Next time you have to change an intake manifold just point your dist rotor at the firewall and reinstall it the same way.
__________________
76 Chevy K20
76 GMC K15
77 Chevy C10
77 Chevy K10
cadillac_al is offline   Reply With Quote
Old 09-19-2019, 09:43 AM   #3
blazer2007
Registered User
 
Join Date: Jan 2007
Location: vernon b.c.
Posts: 3,022
Re: Need help

set the valves again ?
blazer2007 is offline   Reply With Quote
Old 09-19-2019, 11:08 AM   #4
Dead Parrot
Registered User
 
Join Date: Aug 2012
Location: Oklahoma City, OK
Posts: 2,592
Re: Need help

Guessing you are off by one on the plug wires on the cap. Depending on the manifold, you may be able to turn the dizzy one full position and see if that way makes it better.

Otherwise, just move all the wires one post and try it. If no luck, move them the other way.
Dead Parrot is offline   Reply With Quote
Old 09-19-2019, 12:49 PM   #5
Klassen kustoms
Registered User
 
Join Date: Jan 2019
Location: Williams lake bc
Posts: 43
Re: Need help

Alright thank you guys ... maybe next time in in town I’ll grab a timing pointer and different balancer with all the marks on it too...

I’ll try the moving around of plug wires too

As far as I’m aware the valves are actually pretty good? The one thing on this truck that actually seems good! But I did that trick to try and tell if it’s at tdc and used a plastic straw to see and it was at the top

And thank you next time I will just point it at the firewall that seems MUCH easier
Klassen kustoms is offline   Reply With Quote
Old 09-19-2019, 05:45 PM   #6
Klassen kustoms
Registered User
 
Join Date: Jan 2019
Location: Williams lake bc
Posts: 43
Re: Need help

Tried moving the plugs around and nothing

Got a bit better at one point and now is popping and banging out the exhaust pretty bad but still no start or even like rumble of a start up... just backfires... I’ll try a shot and getting it to tdc again and maybe that’ll do it
Klassen kustoms is offline   Reply With Quote
Old 09-19-2019, 06:17 PM   #7
geezer#99
Registered User
 
geezer#99's Avatar
 
Join Date: Aug 2009
Location: Bowser
Posts: 13,723
Re: Need help

When I’ve not had timing marks to use to time a motor I’ve just screwed my compression tester into #1 and bumped it over until it shows compression and then point the rotor towards #1 wire on the cap.
It should fire that way.
geezer#99 is offline   Reply With Quote
Old 09-19-2019, 06:21 PM   #8
Klassen kustoms
Registered User
 
Join Date: Jan 2019
Location: Williams lake bc
Posts: 43
Re: Need help

I will see if I can find a compression tester
Klassen kustoms is offline   Reply With Quote
Old 09-19-2019, 06:37 PM   #9
geezer#99
Registered User
 
geezer#99's Avatar
 
Join Date: Aug 2009
Location: Bowser
Posts: 13,723
Re: Need help

If you don’t have a tester then make a whistle from a spark plug. Drill a small hole down the middle. Not hard to hear when it comes up on compression.
geezer#99 is offline   Reply With Quote
Old 09-19-2019, 07:33 PM   #10
Klassen kustoms
Registered User
 
Join Date: Jan 2019
Location: Williams lake bc
Posts: 43
Re: Need help

Got it started! It’s running super rough and not responding well to any throttle but it is running!

Thanks for the help guys

Turns out it was way outta time so I got it set just a hair before tdc
Klassen kustoms is offline   Reply With Quote
Old 09-19-2019, 09:32 PM   #11
Dead Parrot
Registered User
 
Join Date: Aug 2012
Location: Oklahoma City, OK
Posts: 2,592
Re: Need help

Congrats!

Double check firing order vs wire order on the cap. With all the wire moving, two or more might be switched up.

Might make sure the dizzy is getting a full 12 volt supply. That year of truck shouldn't have had any kind of resistor wire/block but no telling what a PO might have installed because....
Dead Parrot is offline   Reply With Quote
Old 09-19-2019, 09:35 PM   #12
Klassen kustoms
Registered User
 
Join Date: Jan 2019
Location: Williams lake bc
Posts: 43
Re: Need help

I know the orange wire that goes to the distributor is really janky but seems to work

The truck seems to have a resistor block on the firewall too
Klassen kustoms is offline   Reply With Quote
Old 09-20-2019, 02:52 PM   #13
Klassen kustoms
Registered User
 
Join Date: Jan 2019
Location: Williams lake bc
Posts: 43
Re: Need help

The two trucks are looking good together now! Still fighting a big coolant leak on the step side which the intake manifold gaskets didn’t help ... so I’m thinking freeze plugs as it’s dropping onto the bell housing, in the bell housing it seems, and on the starter
Attached Images
 
Klassen kustoms is offline   Reply With Quote
Old 09-20-2019, 04:19 PM   #14
geezer#99
Registered User
 
geezer#99's Avatar
 
Join Date: Aug 2009
Location: Bowser
Posts: 13,723
Re: Need help

Your leak could be coming from the front.
I’ve had them where the coolant ran down the front of the heads and along the pan rail and back to the starter.
geezer#99 is offline   Reply With Quote
Old 09-20-2019, 04:23 PM   #15
Klassen kustoms
Registered User
 
Join Date: Jan 2019
Location: Williams lake bc
Posts: 43
Re: Need help

I know my thermostat housing has a small drip but it’s sure not that much

It’s dumping like a jug once it runs for a couple minutes

It’s hard to check around in the engine bay so pulling the motor will have to suffice ... I’ve never yanked a motor without the trans before so that’s gonna be interesting to do gotta figure that one out .. only ever done it with the trans attached

I’ll give the engine I nice coat of paint while it’s out and maybe paint the bay
Klassen kustoms is offline   Reply With Quote
Old 09-21-2019, 09:06 PM   #16
Pontiac1976
Registered User
 
Pontiac1976's Avatar
 
Join Date: Oct 2015
Location: Ottawa, Ontario, Canada
Posts: 766
Re: Need help

I bet that from the stat old style flat chrome they know for leaks. if it is Fel-Pro blue plastic spacer with rubber rings on both side stops them from leaking (tip do not over tighten the bolts) CAN be-REUSED for a few yr's.
__________________
1977 REG cab Long Bed with a 1984 Front Clip, 82 305 .60 over 9.0.1 flat top pistons, 4bbl, TH350, w/84 SS-intake & cam , w/ 1977 big block rad, 1975 gear box, 1984 master w/ metric fittings top & SAE fitting @ portion block, 1975 3.42 gear open diff. Duel 77-87 Factory air cleaner, duel inlet from rad support . Down sized 9' to new 8' Steel flat bed
Was a 77 454 w/308 gear. Taken out 550 lbs. up front with motor clip change.
Pontiac1976 is offline   Reply With Quote
Old 09-21-2019, 09:08 PM   #17
Klassen kustoms
Registered User
 
Join Date: Jan 2019
Location: Williams lake bc
Posts: 43
Re: Need help

It’s one of the ones with an o ring in it .. or supposed to be ... I am gonna toss it and get an adjustable one cause I need the space for the electric fan temp sensor
Klassen kustoms is offline   Reply With Quote
Reply

Bookmarks

Tags
no start


Posting Rules
You may not post new threads
You may not 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

Forum Jump


All times are GMT -4. The time now is 12:10 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com