4.3 gi over heating

2

209001745

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May 16, 2009
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First time on the sight.
I have a 2000 Volvo Penta 4.3gi that I took out yesterday (first trip of the year). Everything was fine for about 10 minutes until I noticed a slight bit of smoke coming from the engine compartment. I immeditely shut down, opened the compartment and noticed that both exhaust risers were smoking and starting to melt.

Not too sure where to begin the trouble shooting, so I'm looking for suggestions.

Thanks
 
Bt Doctur

Bt Doctur

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Re: 4.3 gi over heating

when was the impeller changed last? Start there first.
 
2

209001745

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Re: 4.3 gi over heating

Guys,

I bought the boat 2 years ago, and to my knowledge neither the lower unit nor the water pump impellors have ever been changed. I guess this is a great place to start.

Also, in addition to the impellors and exhaust risers, is there anything else that you think may need to be replaced.
 
slasmith1

slasmith1

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Re: 4.3 gi over heating

209001745 said:
Guys,

I bought the boat 2 years ago, and to my knowledge neither the lower unit nor the water pump impellors have ever been changed. I guess this is a great place to start.

Also, in addition to the impellors and exhaust risers, is there anything else that you think may need to be replaced.
Click to expand...

the oil in your drive as long as your taking it apart
 
Don S

Don S

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Re: 4.3 gi over heating

Why take the drive apart, there's no impeller in it. It's a Volvo, not a Mercruiser.
Unless that boat was used in salt water, the risers and exhaust manifolds will probably not be your problem.

Did you look at that link I posted in my previous reply?
What is the full model number of your engine, or even the serial number. Just because your boat is a 2000, doesn't mean the engine and drive are.
 
Tail_Gunner

Tail_Gunner

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Jan 13, 2006
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6,237
Re: 4.3 gi over heating

I have the same engine..If you need to replace the impeller do it with volvo parts...For whatever reason aftermaket create's or cause's the back seal to not seal properply..Been there done that twice now. and only 80 hours on the unit.

Here's the possible part's...and maybe Don could illuminate the difference..

? Impeller kit3858256
Replaced by
3862567 1
3862281 21 $48.93
$40.82

3862567

12095.png



3862281

12095.png




You will probably need your engine model number..aka

4.3Gi

 
slasmith1

slasmith1

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Re: 4.3 gi over heating

Don S said:
Why take the drive apart, there's no impeller in it. It's a Volvo, not a Mercruiser.
Unless that boat was used in salt water, the risers and exhaust manifolds will probably not be your problem.

Did you look at that link I posted in my previous reply?
What is the full model number of your engine, or even the serial number. Just because your boat is a 2000, doesn't mean the engine and drive are.
Click to expand...

woops
but would still change the oil since he mentioned it hasn't been done in 2 years.
 
Tail_Gunner

Tail_Gunner

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Re: 4.3 gi over heating

Hmm i believe i may have found the issue, I do have a volvo kit but it does not contain that black washer in front of the impeller. Don i assume that is part of the update

A black solid peice more like a spacer than anything else ....:redface: Sorry to jump this thread hopefully we will both learn something here.

kit.jpg
 
2

209001745

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May 16, 2009
Messages
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Re: 4.3 gi over heating

Thanks for all the great information. I'll pulll the model and serial number and post later today.

It sounds like the groups concensus is the water-pump. Could this have caused the engine to heat the exhaust risers to the point of melting.
 
Don S

Don S

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62,321
Re: 4.3 gi over heating

Could this have caused the engine to heat the exhaust risers to the point of melting.
Click to expand...

Absolutely, after the water cools the engine, it goes out the exhaust to cool the exhaust.

PS: TG
That rubber washer is still in the kit, but I have also seen them fall out of the box they come in.
 
2

209001745

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May 16, 2009
Messages
10
Re: 4.3 gi over heating

Model number is 4.3 gi PEFS
Serial number is 4012009907

Can you help identify the actual year of the motor
 
Tail_Gunner

Tail_Gunner

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Re: 4.3 gi over heating

Thanks again Don...209900745....All the info being shown on this thread is for a PEFS..3862567 thats your kit
 
2

209001745

Cadet
Joined
May 16, 2009
Messages
10
Re: 4.3 gi over heating

I tried to pull the front cover off the water pump last night (held on with 3 brass screws). was hung up pretty tight. Any tricks or suggestions on how to remove?
 
K

kk lowrider

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Joined
Mar 17, 2009
Messages
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Re: 4.3 gi over heating

Yes there are 4 screws you still need to get the last one out, its on the very bottom you may have to feel your way around. Let us know what the old impellar looks like if it is not in one piece youll have to find the pieces. Good luck
 
Tail_Gunner

Tail_Gunner

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Messages
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Re: 4.3 gi over heating

You dismount the entire pump...facing the engine and to left of the pump you will notice two bolts that are mounted to the block. It is a simple as dismount and pulling the pump..Umm now getting it back on can be another story...;)
 
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