MuskieFIRST | 1995 Mercury 175 XRI EFI Compression » Muskie Boats and Motors

Muskie Discussion Forums

You are logged in as a guest. ( logon | register )

Moderators: Slamr	View previous thread :: View next thread
Jump to page : 1 Now viewing page 1 [30 messages per page] Muskie Fishing -> Muskie Boats and Motors -> 1995 Mercury 175 XRI EFI Compression

Message Subject: 1995 Mercury 175 XRI EFI Compression

Abe Lang

Posted 3/31/2017 10:44 PM (#855643)
Subject: 1995 Mercury 175 XRI EFI Compression

Posts: 130

Location: Menomonee Falls, WI

Looking for "cold" compression numbers for a 95 175 XRI EFI. All I can find are numbers for the engine at operating temperature. I got an initial test with the engine not at operating temp. 6 cylinders were at 95 and 2 cylinders were at 94.5 just curious ihow much higher the numbers will be at operating temp. Any thoughts from some Mercury gurus? Thanks in advance for the info.

Edited by Abe Lang 3/31/2017 10:53 PM

4amuskie

Posted 4/1/2017 7:44 AM (#855653 - in reply to #855643)
Subject: Re: 1995 Mercury 175 XRI EFI Compression

I have been told that you can not get accurate compression cold. The rings/piston are not sealed completely when they are cold and readings are inaccurate.
However, youre readings are at least even which is good.

Edited by 4amuskie 4/1/2017 7:48 AM

kjgmh

Posted 4/1/2017 8:10 AM (#855655 - in reply to #855643)
Subject: Re: 1995 Mercury 175 XRI EFI Compression

Posts: 1096

Location: Hayward, WI

Cold isn't the best way to do it, but your numbers don't indicate any problems. Best to redo them when warm, or better yet to a warm leak down test.

Jump to page : 1
Now viewing page 1 [30 messages per page]

Search this forum
Printer friendly version
E-mail a link to this thread