Rough idle/no rev problem

[tada]

What is the compression specification for the 2.5 liter engine? I've searched and searched. I see a post by Jake Raby that says it should be over 200. I see others by JFP that says around 145 and that the results should be within 15 percent of each other.

911monty. I like your suggestion. It's a test for a bent rod. I will have to find a patient helper. My wife doesn't mind cranking it over, but to get her to actually turn an engine by hand is a definite NO.

[911monty]

Originally Posted by tada

What is the compression specification for the 2.5 liter engine? I've searched and searched. I see a post by Jake Raby that says it should be over 200. I see others by JFP that says around 145 and that the results should be within 15 percent of each other.

Lots of factors determine compression condition of motor of course but temperature, density, humidity and altitude all contribute. I think the numbers I gave are conservative for Arizona. Like I said with a failed AOS bent rods are a possibility. Then piston to dome height increases and compression decreases. Not trying to be pessimistic, just think I would want to eliminate this potential. Good Luck.