94 fzj80 compression numbers

[1ststatecruiser]

Did a compression test on my 80 and here's the result

The plugs are 4500 k

Are this good numberss? Thanks

 

[sdnative]

Look great to me. Important thing is the numbers are all close to each other, not necessarily to those from another truck.

From another thread:

As for compression test results, did you do the test with the following:

-warm engine, allows metals to expand, shows you normal operating conditions

-hold throttle wide open while cranking

-crank same length of time for each cylinder

-you are looking for results to be within 10% of each other

-if you have a cylinder that is low, you can put a cap of oil down the plug hole and retest, if the numbers come up to match the other cylinders then you know you have worn piston rings, if the numbers dont' change signifigantly then you have a head gasket or head issue that is the cause of the low compression

-don't worry so much about what the actual #'s are, just that they are close to the same. Different testers, altitude, length of time you cranked over, lots of factors can influence the results so you can't compare them directly to someone else's results with any accuracy.

 

[1ststatecruiser]

Yup I did those, I counted up to five each cylinder. Thanks

 

[Kungpaodog]

With that lower number on #4 your engine is going to grenade any day now. I'll give you $800 for your Cruiser, site unseen. Trust me, I'm doing you a favor

But really, those numbers are great, and if you do a re-test I wouldn't be surprised if you see less of a difference from #4 to the others. Keep driving it like you stole it!

As a data point for others, how many miles on your rig?

 

[Kernal]

1ststatecruiser: noticed you're using the Denso Iridium long life plugs, SK16PR-F8, how do you like them? I'm using the Iridium IK16 Power plugs and have been very happy with the performance. Can you post up a photo showing the tips of your plugs?

 

[1ststatecruiser]

With that lower number on #4 your engine is going to grenade any day now. I'll give you $800 for your Cruiser, site unseen. Trust me, I'm doing you a favor

But really, those numbers are great, and if you do a re-test I wouldn't be surprised if you see less of a difference from #4 to the others. Keep driving it like you stole it!

As a data point for others, how many miles on your rig?

195+ k miles.

 

[1ststatecruiser]

1ststatecruiser: noticed you're using the Denso Iridium long life plugs, SK16PR-F8, how do you like them? I'm using the Iridium IK16 Power plugs and have been very happy with the performance. Can you post up a photo showing the tips of your plugs?

Theyre all back now but for now they all look the same .

 

[BlackLS1]

i love toyota! those numbers are perfect