1999 Supercharged 454 problems
04-25-2008 | 10:29 AM
#13
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kennyo, I think you are onto something here. My guts says its getting detonation. On an efi, how do I correct this? I ran it would thermostat at first and running at 110 has the same cutout at 3800. I wants to run faster I can tell and plenty of power it wants to make...it just can't.
04-25-2008 | 11:00 AM
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Believe the injectors would be stock, but the fuel pump seems to be upgraded. I unfortunately know nothing about this area. the fuel system runs though a red canister looking thing which appears to me aftermarket. My concern here is its not my dream boat and am at the point were I don't want to put much more into it so looking for the cost effective solution to get me through the next year or two till I upgrade.
04-25-2008 | 11:07 AM
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From: Central IL
Believe the injectors would be stock, but the fuel pump seems to be upgraded. I unfortunately know nothing about this area. the fuel system runs though a red canister looking thing which appears to me aftermarket. My concern here is its not my dream boat and am at the point were I don't want to put much more into it so looking for the cost effective solution to get me through the next year or two till I upgrade.
04-25-2008 | 11:40 AM
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I couldn't agree more on the fact it's not a peformance boat. I'd of never put a charger on it myself to begin with. If anyone has any other ideas, I'll keep playing around and paying my mechanic for a little longer then, the charger may just come off. Never running this boat without the charger...would I notice a big difference (its a 5lb boost), other than my hole shot?
04-25-2008 | 01:02 PM
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From: Central IL
I couldn't agree more on the fact it's not a peformance boat. I'd of never put a charger on it myself to begin with. If anyone has any other ideas, I'll keep playing around and paying my mechanic for a little longer then, the charger may just come off. Never running this boat without the charger...would I notice a big difference (its a 5lb boost), other than my hole shot?
04-25-2008 | 01:25 PM
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Thanks all! One more...
The mechanic just called and it doesn't appear to be pulling water in from the ports on the lower unit? I had it out two nights ago and it was moving water as I could see it coming out of the exhaust, plus I could see the water temp go up and down based on how I was running so I know it was getting water. could there be a blockage in the water movement to the engine causing it not to suck water? I'm sure the impeller was ok the other night.
The mechanic just called and it doesn't appear to be pulling water in from the ports on the lower unit? I had it out two nights ago and it was moving water as I could see it coming out of the exhaust, plus I could see the water temp go up and down based on how I was running so I know it was getting water. could there be a blockage in the water movement to the engine causing it not to suck water? I'm sure the impeller was ok the other night.
Presume it's an Alpha outdrive - sounds like the impeller, as the highr temps until you goose it - exactly what mine does every 5 yrs or so. As soon as new impeller, much more stable temp.
When did this start, or has it always done this cut out thing at 3800 rpm, I mean since you owned it?
