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#11
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Water optional... You WILL be replacing the impeller RIGHT.. Just go ahead and pull the LU off.
Compression test done at wot with ign disabled. 
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#12
05-05-2015, 08:57 AM
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I'd leave the lower unit on until you do the compression test.
No immediate need to get the lower unit off if it has bad compression.
__________________
1985 Wellcraft V-20, Evinrude ETEC 150: SOLD 1979 Marine Trader 44, twin Ford Lehman 120s 2006 Panga 14, Tohatsu 20
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#13
05-05-2015, 10:52 AM
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Yes I already have the water pump, thermostats, house barb nipples on order, today will determine if I'm getting head gasket as well.
Doing a compression test with the thermostat housing off the block should not effect anything correct? I know it's only 8 bolts but I don't feel the need to put them on to do the test. Correct me if I'm wrong?
__________________
84 v20 step lift 99 Johnson 175hp
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#14
05-05-2015, 01:15 PM
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Nope won't matter at all
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#15
05-05-2015, 04:26 PM
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Okay guys, compression numbers as follows 120, 118, 113, 118...So to say I'm amazed the numbers match my compression from last week is an understatement.
Now it brings me to a dilemma...do I pull the heads and try to get this gunk out? Unless I put the head gasket on wrong I assume I can't screw up the compression. Just seems like I should let it be, after all I'm not sure this gunk is there from my recent overheat or of it's been there since I've owned it. Dilemma two, of course I want to put in thermostats but since they weren't in there from the previous owner I'm not sure I should, for testing purposes right now...thoughts? Warning horn didn't work when the tan wire was grounded and I ran hot lead direct to the warning horn so I think it's the horn that's toast...guess I gotta source one of those. And I get to try my hand at replacing the water pump which I knew from the get go. Any tips disconnecting it from the linkage?
__________________
84 v20 step lift 99 Johnson 175hp
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#16
05-05-2015, 06:09 PM
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Try another gauge as compression on that engine should be up around 140-145.
__________________
2011 SUNDANCE B20CCR SKIFF, 2011 YAMAHA 90HP 4 STROKE, 2011 KARAVAN SINGLE AXLE ALUMINUM TRAILER, LOWRANCE ELITE-7 HDI, MINN KOTA RIPTIDE TROLLING MOTOR 2000CC HYDRA-SPORT 225+HP EVINRUDE SOLD  AND THE PINK JEEP!!!! R.I.P. http://www.wellcraftv20.com/communit...ad.php?t=11664 
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#17
05-05-2015, 06:55 PM
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did you test at wot? If not the numbers will be low
(wide open throttle)
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#18
05-05-2015, 07:21 PM
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Quote:
Never knew you were supposed to test at WOT, interesting
__________________
84 v20 step lift 99 Johnson 175hp
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#19
05-05-2015, 10:36 PM
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the throttle has to be wide open, otherwise it is like trying to take a breath through a coffee straw.
__________________
2011 SUNDANCE B20CCR SKIFF, 2011 YAMAHA 90HP 4 STROKE, 2011 KARAVAN SINGLE AXLE ALUMINUM TRAILER, LOWRANCE ELITE-7 HDI, MINN KOTA RIPTIDE TROLLING MOTOR 2000CC HYDRA-SPORT 225+HP EVINRUDE SOLD AND THE PINK JEEP!!!! R.I.P. http://www.wellcraftv20.com/communit...ad.php?t=11664
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#20
05-06-2015, 05:28 AM
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Quote:
__________________
1999 Wellcraft 22WA-200 Ocean Runner 1982 Grady White Tarpon 190-110 Evinrude-Sold 1996 Striper 2100WA-RIP Sandy 1989 Wellcraft 18-Sport-125 Force-sold
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Linear Mode
