VP 5.7 gsi - Temperature Rising

W

Wanna Tango

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Sep 12, 2022
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Hello All and happy 4th.
I have a 2000 Seaswirl Striper 2600 with a VP 5.7. I just changed the engine oil and filter, outdrive oil, fuel filters and took out the boat. Noticed that as soon as I hit 3500 rpm, the temp shot up to 250f. Dropped rpm and temp dropped. Took boat out and changed the impeller. Took out the boat today and noticed again that I hit 3500 rpm the temp climbs but at a slower pace than before. I also noticed exhaust / smoke coming out of the outdrive.
Thinking of changing the thermostat just in case but not sure what else can be the issue.
Any help or direction will be greatly appreciated.
 
alldodge

alldodge

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VP so you have a crank driven water pump, correct?

Have a serial number?

Are their any grooves on the wear plate or pump housing?
 
W

Wanna Tango

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Sep 12, 2022
Messages
37
alldodge said:
VP so you have a crank driven water pump, correct?

Have a serial number?

Are their any grooves on the wear plate or pump housing?
Click to expand...
Here is the number 401203969
When you say grooves on the wear plate, where would I see this? Do I need to take off the pump?
By the way, I am fairly a newbie. Lol
 
Scott Danforth

Scott Danforth

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Check the pump housing for grooves/wear marks
Verify the raw water fitting on the drive isn't damaged
 
W

Wanna Tango

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Sep 12, 2022
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Update post: I pulled the water out of the water since I have it dry docked. All looked ok with housing but when I was flushing the engine, noticed quite a bit of exhaust coming out of the outdrive. Thinking I need to take it to a shop for diagnostic and then see.
Unless someone here has any ideas or troubleshooting fixes.
 
alldodge

alldodge

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but when I was flushing the engine, noticed quite a bit of exhaust coming out of the outdrive.
Click to expand...
If motor was running you should see exhaust coming out of the drive.
 
garbageguy

garbageguy

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Rust and stuff in the cooling system? The risers on my "VP" V-8 had some in there when we put a new long-block in there a number of years back. After they were cleaned-up and reinstalled, the cooling-system in that boat worked great for quite some time.
 
W

Wanna Tango

Seaman Apprentice
Joined
Sep 12, 2022
Messages
37
garbageguy said:
Rust and stuff in the cooling system? The risers on my "VP" V-8 had some in there when we put a new long-block in there a number of years back. After they were cleaned-up and reinstalled, the cooling-system in that boat worked great for quite some time.
Click to expand...
I put new manifolds and risers in last year as well.
 
Scott Danforth

Scott Danforth

Grumpy Vintage Moderator still playing with boats
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look at this fitting. 1751908132263.png or 1751908057079.png

replace if its corroded.

they last at most 3 years.
 
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