Compression test results

ok, so I have just done a dry compression test

1. 95
2. 105
3. 103
4. 100

I will now do a wet test.

Can anyone see any issues? Are they lower than expected?

Ta

 

Wet test done

1. 120
2. 125
3. 120
4. 105

Number 4 only came up 5 psi from 100

Should I be concerned? Do these results show worn piston rings?

 

Some pics of the spark plugs.

Running rich?

1.


2.


3.


4. Note small chip...


They are all dry.


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No use looking at plugs unless you've stopped after a good run.
It's a type4? 135 would be better.

 

Did you have your foot on the pedal? You must or the engine has to fight the carbs.

 

...and have all the plugs out...

 

... Rigging up a wire from the starter spade to dab on the battery will let you watch the gauge get to it's max. Some install a permanent wire with a push switch, it's a handy thing.

 

good idea that! not sure why ive never thought of that. I always had someone else do it lol

 

With a temp wire sparking away and your other hand opening the throttle, a switch does look attractive lol. Best hide it though or peeps will be able to rig a live to the coil and start her up. Helps if your steering lock works and I guess and villain could just as easily bridge the starter to start it.

 

Yea type 4, I returned home yesterday after a 150 mile journey. Could the plus have dried off that quickly?

yep foot full down on all tests done, it's a 2.0 FI

Yep all plugs out and turned the engine over 8 times per test

I am going to calculate how much oil has been consumed since I last filled it up.

 

So in 226 miles it has gone from full (top line) to




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about a 1.2 litres used then, yep defo burning oil (plus you will obviously be leaking a bit)

 

Sounds just like my bus

 

It's definitely leaking a lot of oil I'd say leaking more than it is burning.





I am planning to get the engine out tomorrow and weekend


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I feel your pain.


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best to check where its leaking first , can you see ??

 

I got a new engine. Not that it helps your problem!

Mine was leaking from main oil seal, pushrods and barrels.

And it was burning oil through piston rings.

 

Not really, not sure if it's the pushrod seals spraying oil out or it's the cylinder head gasket above.

 

what - new or 2nd hand. If new - good lord. Youd expect it not to leak wouldn't you!

 

so you bought a new one rather than rebuilding?