Getting extremely discouraged

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John Irwin

Junior Member
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Sep 13, 2018
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Location
Portage, PA.
First Name
John
Truck Year
1983
Truck Model
K10
Engine Size
305
Hey all! Having owned 4 different squarebody pickups over the years since 1980 I finally got one that has me about ready to wave the retreat flag and give up. I found an 83 shortbed k10 last year online here in Pennsylvania and drove the 80 miles to look at it on a weekday after work. It was at a small corner lot used car dealer. The owner wasn't around by the time I got there around 7 PM so I got a chance to really check this truck out without someone up my backside talking bs. What I found was amazing. An al original 2 owner example of trucks that were real trucks. Very solid frame, the usual body rust and a perfect example of backyard body and paint work. Still it looked so much better than the beat up abused examples I looked at prior to finding this one. So I took my wife to see it 3 days later and knowing that he wanted $9000 for it we left with a personal loan for $8000 with the confidence that my lady of 35 years could talk him down in price. This is a woman who could talk Santa Clause out of his sleigh. She was raised by an auctioneer so figure that! I asked the guy if he thought it would make it home over 2 steep mountains here in western PA. I would have considered renting a trailer if he would have been honest. But he assured me that she was running great and I had no worries. Very long story short, yes we got it home barely. It kept starving for fuel which after checking the whole fuel system turned out to be a kinked feed line from the tank to the fuel pump sucking shut on hard pulls. Someone put a new gas tank in recently and used the old original sending unit which was folded half closed. Fixed all that then blew a head gasket coming home from work. Taking me 3 months of weekends because of having no help and a full time job which kicks my 56 year old butt so bad that I don't feel up to auto work after work, I finally got that fixed. New valve seals, new distributor, headers, new dual exaust with 8 inch cherry bombs. She ran awesome for a few weeks then picked up a miss. The old quadrajet was badly in need of a rebuild so I swapped it for a rebuilt carb out of Florida. PA winters are brutality cold and after getting educated in choke adjustment and carb tuning I had her running great again. Started fouling plugs which turned out to be a choke pulloff problem flooding the engine. Replaced the choke pulloff and once again running great. Now I just started getting a hesitation kind of bad miss only on acceleration after shifting up a gear. Once again fouled plugs. I give up! This truck is my baby and yes I know that she's old but it's my daily driver my ride to work. I just can't get this 305 running right. I had 2 retired Chevy mechanics who worked on these new look at her and both said that it's a solid truck with a strong for 83,000 miles engine. I'm only the 3rd owner of a 37 year old truck but I'm convinced that this thing is Christine and she hates me! I'm not an auto technician, never was but I'm not ignorant to understanding the pre computer engines. I built and tuned my own stock car motors in the 80s and 90s, 600+ hp roller motors so I know some things about a sbc. This little ole 305 is killing me and frustrating me beyond belief. I know that the 305s weren't great but I hoped to enjoy this thing for at least a year then had plans to save for an ATK crate engine. Just terribly frustrated. Just wondering if any of you all have been here like me?
 

F-64

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Location
nyc
First Name
mike
Truck Year
1987
Truck Model
R10 lwb
Engine Size
5.7 tbi stock
Kinda wondering why the head gasket blew. How is the cooling system? Does the heater work well? Coolant color? Green?
When engine comes up to temp are upper and lower radiator hoses close in temperature?

How much fuel pressure are you running? If pressure is too high, it could be pushing past the float valves.
Are the correct plugs in?
Are all plugs fouling?
 

Octane

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Atlanta
First Name
Eddie
Truck Year
1977
Truck Model
K10
Engine Size
350
Old iron
 

John Irwin

Junior Member
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Sep 13, 2018
Posts
6
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Location
Portage, PA.
First Name
John
Truck Year
1983
Truck Model
K10
Engine Size
305
She's pretty but hard to get along with lol. The head gaskets were the original old steel shim gaskets. I replaced them with new fel-pro gaskets. I also replaced the valve seals with the newer type that came from fel-pro. The cooling system is good, new water pump, new fan clutch, new fan clutch, radiator flushed out. It's a carburated305 with a rebuilt quadrajet. It ran awesome at first then when the choke pulloff went bad causing the choke to not crack open at cold start it started to miss really bad. Like a shuddering miss only on acceleration that would rattle the doors. From the advice of the retired Chevy mechanic, I put a new choke pulloff on and installed new MSD plug wires along with ac/delco R44ts plugs. I set timing at 6 degrees tdc. I set fast idle at 1500 rpm and base idle at 600 rpm the specified setting for a 4 speed transmission. I also set the idle fuel mixture screws for highest vacuum with a vacuum guage. Took it for a ride and was amazed at how great it ran. 6 days later the miss is back. Baffled at this point. Thank you guys for the welcome! I'm glad I found y'all. This is an amazing site for squarebody lovers. So much knowledge and so many useful links.
 

F-64

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Posts
116
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Location
nyc
First Name
mike
Truck Year
1987
Truck Model
R10 lwb
Engine Size
5.7 tbi stock
is it fouling evenly on all plugs?
 

Kim Burke

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Location
Northern IN
First Name
Kim
Truck Year
1979
Truck Model
C1500
Engine Size
454
Welcome John, you’re at the right place. A lot of knowledge here. A lot of smart asses too but we all love squares and want to help.
 

Rusty Nail

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the other side of the internet
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Rusty
Truck Year
1977
Truck Model
C20
Engine Size
350sbc
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Is that my cue @Kim Burke ;) ?

Sounds like there is resistance in the spark path that fails under too much demand. New wires not gonna fix it or you'd have different symptoms.

I'm at cap and rotor. Probably get by with a rotor bug.

Where should we send the bill? :)

distributor rotor ? $10.
Customer price? +20%.
Installation?
Half an hour @$75-80 /hour.
+ shop supplies and tool fee? $5-$15 .
+hazardous waste disposal fee? -$5.

Tell ya what, I got an idea!
Since nobody else is around to help...
We could skip all that and you could not pay all those taxes and fees ********? mmm
Give me $100 and we'll call it .... square.
I'll help you out since you're new but dont tell everybody - I got to make a livin too!

You know what i'm sayin?
:pedobear:
 
Last edited:

Turbo4whl

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Downingtown, PA
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Wayne
Truck Year
1974
Truck Model
Jimmy
Engine Size
350
Is that my cue @Kim Burke ;) ?

Sounds like there is resistance in the spark path that fails under too much demand. New wires not gonna fix it or you'd have different symptoms.

I'm at cap and rotor. Probably get by with a rotor bug.

Where should we send the bill? :)

distributor rotor ? $10.
Customer price? +20%.
Installation?
Half an hour @$75-80 /hour.
+ shop supplies and tool fee? $5-$15 .
+hazardous waste disposal fee? -$5.

Tell ya what, I got an idea!
Since nobody else is around to help...
We could skip all that and you could not pay all those taxes and dees ********? mmm
Give me $100 and we'll call it .... square.
I'll help you out since you're new but dont tell everybody - I got to make a livin too!

You know what i'm sayin?
:pedobear:

Hey Rusty, your price is kind of high. Cut the new guy a break, lowball the price on the first job to reel him in. Then hit hard on the next job.

@John Irwin So something that will not always show up with a compression or leak down test is the bump stick.

1983 305 CI with 83,000 = worn cam. Very common for these years. Just take a quick look for sure. You know, valve covers off, start the engine and make sure all the rockers are moving the same. Rear cylinders exhaust valves are the ones.
 

animal

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Georgia
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Lee
Truck Year
1986
Truck Model
c10 silverado
Engine Size
350ish
:welcome:
 

WFO

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Texas Panhandle
First Name
Dan
Truck Year
1986
Truck Model
K20
Engine Size
350
Welcome from the Texas Panhandle.
 

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