cyl 1-210 cyl 2- 205 cyl 3- 192 cyl 4- 190

Modified by dc2rtek at 10:35 PM 9/28/2006


Modified by dc2rtek at 9:37 PM 9/29/2006

 

your distributor has abosolutely NOTHING to do with compression...in fact you remove spark plugs to do the test...

 

Did you add a small amount of oil to the cylinders and redo the compression test? This will confirm if your rings are the leak path.

 

A leakdown test would give you a better idea what the issue is.

How many miles are on the motor?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by skunked &raquo;</TD></TR><TR><TD CLASS="quote">A leakdown test would give you a better idea what the issue is.

How many miles are on the motor?</TD></TR></TABLE>

86k

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dogginator &raquo;</TD></TR><TR><TD CLASS="quote">Did you add a small amount of oil to the cylinders and redo the compression test? This will confirm if your rings are the leak path.</TD></TR></TABLE>


he did the compression test 2 times without adding oil.

why does the oil actaully show better results?

 

i heard 140 and below is when you burn oil.

true/false

 

my compression is at 190 across the board and i burn a **** load of oil

 

Yep my compression is 230 across and i burn triple what you do. If the engine is running fine then i would let it be. One quart in 3000 miles is nothing to worry about.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ac_attak &raquo;</TD></TR><TR><TD CLASS="quote">Yep my compression is 230 across and i burn triple what you do. If the engine is running fine then i would let it be. One quart in 3000 miles is nothing to worry about.</TD></TR></TABLE>


but still isnt 160 bad for compression?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dc2rtek &raquo;</TD></TR><TR><TD CLASS="quote">


he did the compression test 2 times without adding oil.

why does the oil actaully show better results?</TD></TR></TABLE>

The oil will temporarily seal mildly leaking rings and boost the compression reading. It only helps if the rings are the problem.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dc2rtek &raquo;</TD></TR><TR><TD CLASS="quote">


but still isnt 160 bad for compression?</TD></TR></TABLE>

Don;t worry about the ultimate number because the compression tester can significantly affect that. The difference of 30 psig between cylinders is cause for concern. Have you misshifted recently?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dogginator &raquo;</TD></TR><TR><TD CLASS="quote">The oil will temporarily seal mildly leaking rings and boost the compression reading. It only helps if the rings are the problem.

Don;t worry about the ultimate number because the compression tester can significantly affect that. The difference of 30 psig between cylinders is cause for concern. Have you misshifted recently?</TD></TR></TABLE>


hmmmm on the freeway onramp i redlined 3rd gear and i hit the clutch to do a slow shift but i didnt hit the clutch all the way in so it kind of grinded and didnt go into gear and it didnt bounce off the limiter.

 

For a misshift to matter, it is typicall 3rd gear at redline downshifting to 2nd for an overrevving, exhaust valve bending experience. I brought up a misshift because it is a common way to lose compression.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dogginator &raquo;</TD></TR><TR><TD CLASS="quote">For a misshift to matter, it is typicall 3rd gear at redline downshifting to 2nd for an overrevving, exhaust valve bending experience. I brought up a misshift because it is a common way to lose compression.</TD></TR></TABLE>

i never went from 3rd redline to 2nd before.