Lexus is 200

[Dimitris]

Hey guys i have a lexus is 200 .. 1g with lpg

1 cylinder 125 compression

2 cylinder 125 compression

3 cylinder 200 compression

4 cylinder 200 compression 

5  cyl    200 compr

6  cyl    200 compression...

 

 

What's happening?😭...  1 and 2 cylinder 125 compression... please help what's is problem

[ColinBarber]

That fact that two cylinders next to each other are low leads to think there is a leak between them, probably head gasket but could be crack in block, but could be something else.

Not aware of any common issue on that engine with those two cylinders.

[Dimitris]

1 hour ago, ColinBarber said:

That fact that two cylinders next to each other are low leads to think there is a leak between them, probably head gasket but could be crack in block, but could be something else.

Not aware of any common issue on that engine with those two cylinders.

Bad adjust valve???? 

[ColinBarber]

You should certainly check normal things first such as valve clearance, although I see no reason why 2 cylinders would be bad and not the others.

Equally LPG conversions for the IS200 can be problematic with valve wear, but I'd expect all cylinders to show signs of a problem if that were the case.