I have a 1984 fj60 with a 2F motor. I personally desmogged 6 months ago but had intermittent vacuum loss over the last few months, so I decided to pull my HAC 2 days ago. Vacuum lines and Plugs are in alignment with JimC diagrams. Following this my vacuum stayed at about 17, really no different than before but the intermittent loss of vacuum stopped.
Then last night while I was driving to work, I lost significant power and the motor started running really rough. I checked my vacuum and I had quick switching from 15-17. I limped her home this morning and started troubleshooting.
I started pulling spark plug wires and identified cylinder 3 as the culprit (no change in my idle when pulled). I then replaced the plug since I could see spark. No change with new plug. After all that, I got a compression gauge and found no compression in cylinder #3. I spoke with my local guy that I trust completely (Boozer’s Cruisers) and he is planning to do a cylinder leak down on Monday. I’m hoping that since its complete loss of pressure I’m dealing with an exhaust valve that’s stuck open.
I’d like to get an idea of what I’m looking at with regards to range or price for that kind of repair. I assume that while he’s that deep in the motor we will be replacing the head gasket and might as well do all the valves? What else could it be and cost? Any chance I blew the piston ring, and how much more would that be? Thanks in advance for any help.
Then last night while I was driving to work, I lost significant power and the motor started running really rough. I checked my vacuum and I had quick switching from 15-17. I limped her home this morning and started troubleshooting.
I started pulling spark plug wires and identified cylinder 3 as the culprit (no change in my idle when pulled). I then replaced the plug since I could see spark. No change with new plug. After all that, I got a compression gauge and found no compression in cylinder #3. I spoke with my local guy that I trust completely (Boozer’s Cruisers) and he is planning to do a cylinder leak down on Monday. I’m hoping that since its complete loss of pressure I’m dealing with an exhaust valve that’s stuck open.
I’d like to get an idea of what I’m looking at with regards to range or price for that kind of repair. I assume that while he’s that deep in the motor we will be replacing the head gasket and might as well do all the valves? What else could it be and cost? Any chance I blew the piston ring, and how much more would that be? Thanks in advance for any help.