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    Rought start idle

    Maybe someone could help me understand what is causing this rough idle on start on a 5.7GS 2001 Wellcraft. So far i have replaced distributor cap, rotor, plug wires, spark plugs, coil, fuel pump, fuel filter and rebuilt the carb....no change. Boat starts fine but until you give it throttle the...
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    No thermostat, overheating

    Engine with overheating issue. 5.7GS The thermostat along with impeller replaced. The engine had an overheating event and it looks like things might not be very good over the horizon. I removed the 140 therm and engine will run at 175 at idle. All of this is on a hose hook up not via muffs. By...
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    Distributor alternatives

    2001 Wellcraft with 5.7gspefs engine with a points distributor. After a visit to the mechanic due to backfiring and some other issues. The mechanic said that the dist was bad. He went into detail but i did not proceed with the dist replacement and brought it home. I personally am not a fan of...
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    Gurgling coming from exhaust

    Hi all, i noticed on my manifolds water entry port once the hose is removed that a small amount of bubbles are present. Engine is a 5.7gs and the manifolds and risers are a month old. I replaced them due to new to me boat and i had no history on it. I wanted to be safe. Long story short. On the...
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    no speed then back to full speed

    5.7GS with puzzling issue. Took the boat to the water and tested and of course all goes south. The issue that i seem to have that i cannot track down is the boat will not go past 10mph. Trim down or up and still no change in speed. Also used the stabilizers and nothing. Once i shut the engine...
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    5.7gs low oil pressure

    Question for those that might be familiar with low oil pressure. New oil psi gauge reading 20psi. Changed sender and sensor and no change. No noise or weird sound coming from the engine. I changed all new gauges from Faria. Prior to the change it was showing 20psi. New to me boat. Compression...
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    5.7gs temp gauge wiring

    Can someone help me regarding a wiring question. My 2001 Wellcraft 2600 Martinique with a 5.7GSPEFS had the temp gauge working fine and all the sudden it stopped showing the temp at the gauge. I changed all gauges as they where tired and worn out. No change with new temp gauge the rest are...
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    Bathroom (head) caulk

    I know this might be a weird one. Gotta love half vinyl bathrooms that have caulk between panels. The question would be...what is the best or preferred caulk to seal the seams in the head compartment between vinyl panels? Currently some of the seems have lost their caulk and i want to re seal...
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    Bilge blower question.

    Let me start by saying i am not electrically inclined...at all. Bilge blower on a 2001 Wellcraft Martinique 2600 5.7 VP was replaced as the old one gave up. The wiring was spliced and connected to the old connector and all connected back.... Not working. Checked 12v at the plug with the switch...
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    Outdrive Paint & Prep

    I have been reading up on previous post but cannot seem to find the answer. I am preping my DP for paint. I do not have Alodine or Alumaprep. The outrdrive will be sanded for paint. I only boat in saltwater. I will try to keep as much of the factory paint as possible. The question is 2 fold...
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    Trim switch wiring review

    As i was replacing my shift/throttle control i came across something that seems odd to me. New to me boat and the shift control had seen better days so i decided to replace. Also the trim up/down was not working. Upon dissasembly i noticed wires crimped together and others broken. What i found...
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    Volvo Penta shift cables substitutions

    Can someone possibly advise. I changed the throttle command on my 2001 wellcraft martinique 2600 5.7GS. The old throttle lever was stuck and in poor conditions. I managed to get a hold of a newer Volvo Penta throttle without kill switch as i it had it already just not on the command. The old...
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    New to me boat with VP 5.7GS

    Hey folks, i will like some input as to what to go over in a new to me VP 5.7GS engine to help it last longer. So far i have done a compression check on all 8 cyls and came back with 175-180 across the board. From what i can gather the boat 2001 Wellcraft 2600 Martinique has been sitting...
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    5.7gs coolant temp sensor

    New to me 5.7GS PEFS engine. I am looking to replace the coolant temp sensor on the side of the thermostat housing. When i do a parts search from Volvo Penta it gives me 3850397 but that is not the one that i currently have. My sensor is with the flat connector for only one wire and the part...
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    New 5.7 issues with old(new) starter

    Folks i have an issue with a rebuilt 5.7 4 bolt 880 block. Long story short old block which was newly rebuilt less than 10 hrs on it was sent back due to noise. I was given a reman 880 5.7 block. All parts bolted back in but there is an issue with the starter. Starter is new and was bought and...
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    383 conversion, outdrive concern.

    Guys i am steps away from sending the 5.7 to be reworked and turned into a 383. I have question if the outdrive will sustain the new torque. My current outdrive is a DP-SM. Attached is the pic of the drive number. And another question would be how to determine if the 5.7 was really converted to...
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    Taking suggestions 5.7 Vortec

    Guys here is my dilema. New engine 5.7 vortec carb, block 880 casting with less than 10 hours was taken out of boat due to leaking oil pan gasket by the timing chain cover. Engine has a noise under load that comes and goes, not yet determined where. Long story short. Rust signs where detected of...
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    Overheating under load

    Guys i have a question regarding a broken seal on the TSK SX-M water intake tube. I kept overheating under load and decided to go ahead and replace manifolds and risers due to age. After replacement still overheating under load. I checked impeller which was new and still in good shape. Circ pump...
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    Overheating at 30mph

    Folk i need to pick your brain, i took the boat out today and at idle up to about 15mph temp stays at 160. I went to 30mph and temp spiked and alarm went off. Boat is a 5.7 Penta. I had replaced the impeller a couple of months ago. Risers and one manifold is new. Any ideas what could cause this...
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    New Carb conversion issues 5.7

    I need some help trying to figure out an issue i have with a new carb, coil, distributor fuel pump and wiring that was done on my boat. TBI gutted and a new carb, dizzi, coil, fuel pump and wiring installed. The boat started perfectly after timing bu the mechanic. Engine was left running for...
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