Author Topic: Many Plugs in engine compartment without a home. Any help?  (Read 8362 times)

Offline MyOldScottsdale23

  • Newbie
  • Posts: 48
  • Newbie
Many Plugs in engine compartment without a home. Any help?
« on: January 07, 2012, 07:21:11 pm »
I recently bought a 1985 SWB Scottsdale. The PO was let's just say not into detail. He pulled every hose and harness in the engine compartment. Most of it is completely gone and some plugged. Here are the problems I want to fix first I just don't know how to route the hoses or which plugs go where.
Problems: Hard to cold start.
                Wants to die until warm.
                Gas mileage is awful.
                Gas fumes are really bad.
                Oil is being pushed out holes in valve covers and out rear main seal.

Offline MyOldScottsdale23

  • Newbie
  • Posts: 48
  • Newbie
Re: Many Plugs in engine compartment without a home. Any help?
« Reply #1 on: January 07, 2012, 08:18:30 pm »
This is also my first post so I apologize if I have trouble explaining my problem. I would love some pics of some similar set-ups so I can just mimic the wiring and hose locations. Any help with these problems will be greatly appreciated. Thanks in advance!

Offline Lt.Del

  • Andy aka:SgtDel
  • Senior Member
  • ****
  • Posts: 3864
  • DelbridgePhotography.com
    • www.delbridge.net
Re: Many Plugs in engine compartment without a home. Any help?
« Reply #2 on: January 07, 2012, 08:28:11 pm »
sounds like you have a choke issue and perhaps a vacuum leak or two and perhaps a PCV valve issue.  Electric choke??  Some pics from you would be nice.   The only thing i can offer are pics from my '79 showing the vacuum lines.  Yoiu should have a vacuum schematic on your radiator support--a silver decal by hood latch.

www.delbridge.net/vacuum.html

Offline MyOldScottsdale23

  • Newbie
  • Posts: 48
  • Newbie
Re: Many Plugs in engine compartment without a home. Any help?
« Reply #3 on: January 07, 2012, 09:12:21 pm »
I do know that I have a vacuum for the brakes and I think it's the only one. The choke isn't hooked up. And there is no PCV valve.

Offline bake74

  • Senior Member
  • ****
  • Posts: 5871
    • Build Thread
Re: Many Plugs in engine compartment without a home. Any help?
« Reply #4 on: January 07, 2012, 09:22:41 pm »
     We need more info to help.  Start by telling us which engine, if you do not have the diagram on your radiator, maybe someone can dig one up for you.  Have you tried a chillton book or the likes for a diagram ?
#1: The easiest and most obvious solution to any problem is 99% of the time correct.
#2: There is no such thing as impossible, it just takes longer.
  74 k10, 77k10    Tom

Offline Dr_Snooz

  • Junior Member
  • ***
  • Posts: 684
  • "I like to take hammers, and just break stuff"
Re: Many Plugs in engine compartment without a home. Any help?
« Reply #5 on: January 07, 2012, 09:34:19 pm »
Sounds like the PO was a tweaker who went off his meds. Autozone has vacuum diagrams on their website under the "Repair Info" tab. I would use them.
1989 Chevy Suburban V-2500, 5.7L, TH400

1990 Chevy C-3500 Ext. Cab, 7.4L, 3L80

2009 Chevy Silverado 1500 WT 4WD, 4.8L, 4L60

Offline MyOldScottsdale23

  • Newbie
  • Posts: 48
  • Newbie
Re: Many Plugs in engine compartment without a home. Any help?
« Reply #6 on: January 07, 2012, 10:51:45 pm »
It's a 305 and yes the guy really treated the truck bad. She really needs some LOVE! The diagram on the rad support has been painted over. I am not good at reading wiring diagrams at all. So I'm kinda at a disadvantage. I also don't have Internet except on my phone so I can't post pics.

Offline bake74

  • Senior Member
  • ****
  • Posts: 5871
    • Build Thread
Re: Many Plugs in engine compartment without a home. Any help?
« Reply #7 on: January 07, 2012, 11:01:17 pm »
     If you have a auto zone nearby as dr_snooz said, go in and see if they will print you out a vacuum diagram for your truck.  If you can not or don't have one close, wait until someone who can post one sees this.
#1: The easiest and most obvious solution to any problem is 99% of the time correct.
#2: There is no such thing as impossible, it just takes longer.
  74 k10, 77k10    Tom

Offline MyOldScottsdale23

  • Newbie
  • Posts: 48
  • Newbie
Re: Many Plugs in engine compartment without a home. Any help?
« Reply #8 on: January 07, 2012, 11:15:03 pm »
K thanks guys I'm workin on it I'll let you know how it goes.

Offline Irish_Alley

  • Tim
  • Senior Member
  • ****
  • Posts: 13333
  • Family is not an important thing. It's everything.
Re: Many Plugs in engine compartment without a home. Any help?
« Reply #9 on: January 08, 2012, 04:15:47 am »
for one you shouldnt have any holes in the valve covers if you do it will leak oil. "T" off the vacuum line going to the booster and add a pvc valve and plug one hole then go to autozone and buy a breather cap for the other side the pvc valve sucks up fumes caused by blow-by then reburns them this is probably the gas smell your smelling is the blow-by coming out of the valve covers. as far as cold starts like sgt said choke problem. might not be hooked up or improperly hooked up.
If you can’t tell yourself the truth, who can you tell it to?~Irish_Alley

When you have eliminated the impossible, whatever remains, however improbable, must be the truth ~Sherlock Holmes

Offline Blazin

  • Blazin new trails!
  • Senior Member
  • ****
  • Posts: 6130
Re: Many Plugs in engine compartment without a home. Any help?
« Reply #10 on: January 08, 2012, 09:04:19 am »
The PCV valve should have a hose routed to the air filter housing. You don't want to suck oil out of the engine, you also don't want it in your brake booster. Its a vent, nothing more.
There should be a vacuum hose running from the front of the carb to the vacuum advance on the distributor. Two ports off the front of the carb, it should be on the one that doesn't have vacuum at idle, but does off idle.

As far as the rear main seal probably needs to be replaced. Being an 85 it should have a one piece rear main seal. You have to pull the transmission to replace it but its pretty simple once the trans is out. I would put a new front seal in the trans too for good messure.
 
Oil coming out the vale covers could be blow by. In other words the rings are tired, and compression is getting into the crank case.

Sounds like your choke is not working. next time you cold start it take the air filter cover off. Check how the choke flap is positioned. Turn the key on and check again, it should be closed at this point. The electric choke runs through the oil pressure sender that's located at the back of the engine sort of beside where the distributor housing goes into the block. I have had several of this vintage trucks that didn't start well. The problem was usually right there.
This could be some of your gas fume issue. It could also be that the vent tube running to the charcol canister has been removed.
Some people are like Slinkies. Not really good for anything, but they still bring a smile to your face when you push them down a flight of stairs

Offline Lt.Del

  • Andy aka:SgtDel
  • Senior Member
  • ****
  • Posts: 3864
  • DelbridgePhotography.com
    • www.delbridge.net
Re: Many Plugs in engine compartment without a home. Any help?
« Reply #11 on: January 08, 2012, 12:15:58 pm »
Quote
Being an 85 it should have a one piece rear main seal.

Blazin, are you sure about an '85 being a one piece?  i think they started in '86.  An '85 should be a two piece, very easy to change without removing trans or starter.







« Last Edit: January 08, 2012, 12:47:09 pm by SgtDel »

Offline Blazin

  • Blazin new trails!
  • Senior Member
  • ****
  • Posts: 6130
Re: Many Plugs in engine compartment without a home. Any help?
« Reply #12 on: January 08, 2012, 01:22:42 pm »
I have had to 85s I had to change the rear main in, they were both one piece rear main seals. It was alopng time ago. Posible they were late 85s so they were actually 86s?
Some people are like Slinkies. Not really good for anything, but they still bring a smile to your face when you push them down a flight of stairs

Offline MyOldScottsdale23

  • Newbie
  • Posts: 48
  • Newbie
Re: Many Plugs in engine compartment without a home. Any help?
« Reply #13 on: January 08, 2012, 09:05:54 pm »
I'll check on the rear main seal this weekend. I found that my electric choke on edelbrock isn't hooked up at all. It was zip tied open. Also doesnt have an oil pressure switch at all. The hole in the block by the distributor has a plug in it. I found the one prong and two prong harness that plug into them. Also the blue wire had been cut between the oil pres. switch and the choke. The plug for the choke had been piggy backed into a red wire from the distributor but still wasn't plugged into anything.

Offline Blazin

  • Blazin new trails!
  • Senior Member
  • ****
  • Posts: 6130
Re: Many Plugs in engine compartment without a home. Any help?
« Reply #14 on: January 08, 2012, 09:18:58 pm »
Woah, sounds like a real cave man owned it!!
Some people are like Slinkies. Not really good for anything, but they still bring a smile to your face when you push them down a flight of stairs