www.iFourWinns.com

well i checked the compressions and they were all fine at around 180,I have replaced the thermostat and the engine runs to the correct temp now ,the old thermostat came out in 3 parts! but still norevs over around 4000-4200 max! checked the timing as well all ok,cleaned the flame arrestor as well,what do I look at next? I have removed the distributer cap and wires and will take them to my mechanic to check wires and clean the distributer cap etc,maybe that will help? any other ideas guys would be fantastic ,at this stage I dont know what to do next and its doing my head in!!!!lol thanks in advance

Could just be an inaccurate tachometer. What is your speed (measured by GPS) at WOT ?

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One of 4 Previous (Sold) Boats:
2000 Four Winns 268 Vista

Current Boat: 2004 Chaparral 235 ssi cuddy

There really is no such thing as cleaning a cap, if there is question about what it looks like then replace it. Does the engine sound like it has a misfire? Has it always run at this rpm since you owned it or did it coincide with something else happening.

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Brian Borchik
The Winds of Cold Springs Harbor Marina
Baldwinsville, NY

_________________
One of 4 Previous (Sold) Boats:
2000 Four Winns 268 Vista

Current Boat: 2004 Chaparral 235 ssi cuddy

I am not sure myself. But when I here of problems like this at the club, 90% of the time it has to do with the rises or manifolds. They are clogged and restricting air flow. I don't think its the fuel filter, but if the fuel filter is restricting the flow, it could be. Too easy to do and for $6 or $7 I would replaced it before going after the manifolds.

I good shop will have one of those small cameras, that they can pull a manifold plug and look inside without removing it. Much cheaper & easier if thats not the problem. I have been thinking of buying one, but the cost is about $250 to $300 for one. http://www.mitchellinstrument.com/extec ... e=googleps

Yes, cleaning the cap, well??? Most of the time they will have a hair line crack and leak to ground. You might say the cap is self cleaning, due to the contacts are all ways being hit by the rotor.

Sounds to me like its got the wrong pitch prop on it.

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Brian Borchik
The Winds of Cold Springs Harbor Marina
Baldwinsville, NY

You MIGHT be right!!! I am thinking that the testing is being done on land, not on the water.

Doubtful it has anything to do with the risers





I seem to recall he has an F4 set on the boat, which should be fine for his location. Since his speedometer did not work when he bought it, trim gauge did not work, my guess is he also has some problems with an accurate reading of RPM's from the tach. GPS speed at WOT will tell if that is the case.

_________________
One of 4 Previous (Sold) Boats:
2000 Four Winns 268 Vista

Current Boat: 2004 Chaparral 235 ssi cuddy

quote="fourwinnskiwi"]Hi ,I have been looking for a 268 and just bought a 2001 ,gxt 5.7 225hrs,arch,new manifolds,risers,starter etc, 1 owner from new,Ive paid a deposit(refundable) and getting a full survey done on the boat before paying the balance ,pays to be safe and Im in New Zealand ,so a bit far to pop in for a look myself ,lol.[/quote]

That part I did not know, since it is not part of the thred.

As previously posted, I think the best suggestion is check the prop size and pitch. Compare to what the boat delivered from FW with (you can find original specs on the FW web site in previous models). Then just give it a tune up - plugs etc., fill up with premium unleaded fuel and check speed against FW specs with a GPS. You are only a few hundred rpm off max so can't be too many things causing this.

Based on NZ fuel prices, you may find the previous owner installed a bigger pitch prop to try and give better fuel economy...

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Alec

2006 Horizon 190
VP 4.3GL/SX, Sunsport

Thanks for the help again guys,so far I know the manifolds and risers are new ,so that cant be it,The timing is correct ,but I have the plugs out ad the cap off ,the contacts inside the dizzy cap were a little corroded,so they are now spotless and there is no cracking on the,cap and it looks fairly new ,The plug wires were tested today and have high resistance so they are being replaced tomorrow when the new parts arrive,Im also thinking the following,The boat is an 01 model ,but the the engine could be 99 or 2000 or 2001 model who knows ,depending on what was in stock at the time the boat was produced,does anyone know the correct spark plug gap settng? I have asked a 3 different places and heard 3 differnt stories,the plugs are champion 7013 ,are they the correct plugs? someone say set them at 45 thou,some say 55 thou and other 60 thou,my owners manual says 45 thou,but the agent says 65 thou,I just need a straight answer to eliminate this from the equation,they also tell me to use the electronic device to disable the electronic advance and set the timing to 8 btdc at idle ,then re connect ,does this sound correct? Im keen to sort it out asap ,maybe it is the tacho>? although it rev out correctly while on the hose with no load ,but in the water theres just no way,I am trying the boat both in and out of the water to be certain,HELP! LOL

FORGOT TO SAY THE PROPS ARE THE CORRECT PROPS FR THE BOAT ,CHECKED THE SPECS TO BE SURE!

The belief that plugs are properly gapped as delivered in their box from the factory is only partially true, as proven by the fact that the same plug may be specified for several different engines, requiring a different gap for each. In other words, "45" or "55" could be right for that plug in there engines and maybe not yours. I would contact FW with the engine ser# and ask them. Unless some one on the forum knows that has the same year and model engine. On my engine, it is printed on the black flame arrestor cover.

Now you said "so far I know the manifolds and risers are new". It sound like you are not sure. Since you have the right prop, and IF your not sure about the manifolds. I would use a camera to see. It would only take a few minuets to pull a plug and look inside. The boat is an 2001 which makes it 10 to 11 years old depending when they got it.

Four Winns would not have the info handy, as the engines and drives come pre-assembled from VP, and Four Winns
does nothing but install them, and test run before they leave the plant. Four Winns would just google your question.
Volvo-Penta would be who you could call for the correct info. I'll save you the trouble......

Spark Plug Gap for 5.7L VP engines with DP drive is as follows.
5.7L Gsi Gen 1 = .045
5.7L Gxi = .060
5.7L Gs , GLi, Gi, GL, carbed or EFI = 0.45

Get rid of the Crapion (Champion) plugs and put in AC-Delco or NGK if you need to replace them.

_________________
One of 4 Previous (Sold) Boats:
2000 Four Winns 268 Vista

Current Boat: 2004 Chaparral 235 ssi cuddy

I ment to say, call Volvo not FW. Sorry. I know Merc would know. I have called them with these type of questions and have been very helpful.

Yes, it is a Chevy engine. I would also use the AC/delco plugs.