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Recent content by CaptJoe3

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    454 Fuel Pump/Pressures

    That's way too high. Once again, what is the definition of High pressure vs. Low pressure? I see some requirements for High pressure and presume that is above 30 psi. The spec for the TBI is 16-22 psi. Is that considered High or Low? I can't find any kind of reference. Most pumps are referred to...
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    454 Fuel Pump/Pressures

    Sadly, I'm finding this out. From what I have been able to determine, the first generation TBI, aka MEFI-1 came out 1992/1993 and ran through 1995, when the MEFI-2 came out and ran through 1997, maybe '99. So it's important to start with Crusader SN. Mine, as it turns out are 1993 and 1994...
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    454 Fuel Pump/Pressures

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    454 Fuel Pump/Pressures

    Yes, we replace fuel pressure regulator which improved fuel pressure to 10-11psi. Still would not run. Replaced with a spare fuel pump that tested 30 psi on the bench. Now have 20ish psi engine runs but idle is quite rough. Working on that.
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    454 Fuel Pump/Pressures

    Late getting back but anything less than 11 psi wont run these engines
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    454 Fuel Pump/Pressures

    Do you know why there are so many different opinions on fuel pressures for the pumps on these engines? The specs from the Crusader manual state 16 psi to 20 psi (maybe its 22?) But folks refer to 45 psi as low pressure pumps. Many of the pumps on the market for Crusader don't even state the...
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    454 Fuel Pump/Pressures

    Actually fuel pump tested at 30 psi using diesel. Didn't have gas in shop. Will test using gas later today.
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    454 Fuel Pump/Pressures

    I have twin 1994 Crusader 7.4 TBIs and am dealing with stall/no start issues on Port engine. We're reading low fuel pressure 5-8 psi. Manual says 16psi min and 20/22 max psi. Why are many on this forum posting their fuel pressure reading "perfect 12psi? And fuel pump pressure is 14-18psi? Any...
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    Recommended Coolent for 7.4 TBi FWC

    Yes, HE tubes were rodded and inspected. Bubbles no longer issue. Plenty of water flow. Coolant not mixed, always used Prestone 50/50. Thanks for your reply.
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    Recommended Coolent for 7.4 TBi FWC

    Ive been having overheating problems. Have done everything we can think of except change brand of coolent. What is the recommended coolent for these engines?
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    Overheating issues

    We're going to take a run to get temp data at 2500 and 3500. Last resort I'm thinking of ordering a new heat exchanger. Nightmare would be pulling heads though there is no sign of water in oil. BTW, I've had four oil sample analyses since re-power. Most recent showed elevated bronze and higher...
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    Overheating issues

    I wasn't getting testy. Both me and my mech are very frustrated and seeking any input towards something we may have missed or are not aware of. I appreciate your interest and knowledge. I'm the middleman! I'm relaying this stuff back and forth.
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    Overheating issues

    Re: Clear hose. Mech. believes thee clear cap on strainer gives that info. Wants to try a clear hose "into a clear cylinder with "headspace"
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    Overheating issues

    The sherwood pump was overhauled using the major repair kit. Shafts were ok so not replaced, just cam, bearings, seals, wear plate. My mechanic has over 50 years experience in marine maintenance after his tour in USCG as "Engineman". Is a member of ABYC.
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    Overheating issues

    Have not done a clear hose test. Raw water pumps were rebuilt at repower in 2023. Only 100 hours on them. Will try to get data at 2500 and 3K.
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