Hugomartin
Banned
- Joined
- Jul 23, 2021
- Posts
- 256
- Reaction score
- 71
- Location
- Nc
- First Name
- Hugo
- Truck Year
- 1987
- Truck Model
- V20 3/4 ton 5.7 350 suburban
- Engine Size
- 350
Looks like no compression on 4,6,8
- Thread starter Hugomartin
- Start date
Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
MarineOne
Full Access Member
- Joined
- Jan 12, 2023
- Posts
- 440
- Reaction score
- 452
- Location
- Western New York
- First Name
- David
- Truck Year
- 1986
- Truck Model
- K25
- Engine Size
- 454
Have you checked rocker adjustment?
Hugomartin
Banned
- Joined
- Jul 23, 2021
- Posts
- 256
- Reaction score
- 71
- Location
- Nc
- First Name
- Hugo
- Truck Year
- 1987
- Truck Model
- V20 3/4 ton 5.7 350 suburban
- Engine Size
- 350
No I have not sir. Thanks for the advice
Maknwine
Full Access Member
- Joined
- Nov 24, 2016
- Posts
- 101
- Reaction score
- 141
- Location
- Virginia
- First Name
- Tom
- Truck Year
- 1987
- Truck Model
- c30
- Engine Size
- 5.7
I agree with Marineone, I bet you got a couple valves not closing. Mine had a stuck exhaust valve and I had zero compression on the cylinder.
Good luck.
85K304SPD
Full Access Member
- Joined
- Mar 29, 2022
- Posts
- 410
- Reaction score
- 607
- Location
- Las Cruces, NM
- First Name
- Richard
- Truck Year
- 1985
- Truck Model
- K30
- Engine Size
- 383
Maybe a head gasket issue.
Hugomartin
Banned
- Joined
- Jul 23, 2021
- Posts
- 256
- Reaction score
- 71
- Location
- Nc
- First Name
- Hugo
- Truck Year
- 1987
- Truck Model
- V20 3/4 ton 5.7 350 suburban
- Engine Size
- 350
Finally have a day off how should I start the process of rocker arm adjustments.
Hugomartin
Banned
- Joined
- Jul 23, 2021
- Posts
- 256
- Reaction score
- 71
- Location
- Nc
- First Name
- Hugo
- Truck Year
- 1987
- Truck Model
- V20 3/4 ton 5.7 350 suburban
- Engine Size
- 350
Hugomartin
Banned
- Joined
- Jul 23, 2021
- Posts
- 256
- Reaction score
- 71
- Location
- Nc
- First Name
- Hugo
- Truck Year
- 1987
- Truck Model
- V20 3/4 ton 5.7 350 suburban
- Engine Size
- 350
Since 4,6,8 are bad how do I adjust the number 4 intake and exhaust?
bluecamden85
Full Access Member
- Joined
- Mar 23, 2022
- Posts
- 56
- Reaction score
- 26
- Location
- Ohio
- First Name
- Chris
- Truck Year
- 1982
- Truck Model
- Sierra
- Engine Size
- 350
If you're going to take valve springs off I would suggest the rope method. Might wanna change the valve seals too while your at it.
Similar threads
