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CW757 View Drop Down
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Joined: August-16-2020
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    Posted: July-18-2021 at 1:07pm
Relays good back by the ECM?
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KENO View Drop Down
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Points: 11184 		Post Options Post Options   Thanks (0) Thanks(0)   Quote KENO Quote  Post ReplyReply Direct Link To This Post Posted: July-10-2021 at 8:01pm
Originally posted by 8122pbrainard 8122pbrainard wrote:

From another thread, here's talk and a picture about checking the fuel pressure:

Originally posted by KENO KENO wrote:

Originally posted by MurphyCO MurphyCO wrote:

Originally posted by MrMcD MrMcD wrote:

Start with verifying your fuel pressure while it is running.  Leave the gauge hooked up and run the boat, if it dies again check your pressure while it is dead.  Cycle your key on and off which should activate your fuel pumps with each time the key is turned on, it will only power the pumps for three seconds with each turn of the key if the engine does not start.  Pressure should be around 40 psi.

Thank you! I have a fuel injection pump test kit; do I test at the relief valve / test point on the FCC body? Allen screw?




Here's a picture from a recent thread showing where the schraeder valve is 


Originally posted by lobuzz311 lobuzz311 wrote:




Since you have a gauge, now you can check pressure when it won't start  then you'll maybe know where to throw money next instead of guessing. Wink

The only way you should pay any attention at all to this picture in the quote above is if you have a gt40 and the last year of those was 2002 

More info would be a good thing  Wink
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8122pbrainard View Drop Down
Grand Poobah
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Joined: September-14-2006
Location: Three Lakes Wi.
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Points: 41045 		Post Options Post Options   Thanks (0) Thanks(0)   Quote 8122pbrainard Quote  Post ReplyReply Direct Link To This Post Posted: July-10-2021 at 7:28pm
From another thread, here's talk and a picture about checking the fuel pressure:

Originally posted by KENO KENO wrote:

Originally posted by MurphyCO MurphyCO wrote:

Originally posted by MrMcD MrMcD wrote:

Start with verifying your fuel pressure while it is running.  Leave the gauge hooked up and run the boat, if it dies again check your pressure while it is dead.  Cycle your key on and off which should activate your fuel pumps with each time the key is turned on, it will only power the pumps for three seconds with each turn of the key if the engine does not start.  Pressure should be around 40 psi.

Thank you! I have a fuel injection pump test kit; do I test at the relief valve / test point on the FCC body? Allen screw?




Here's a picture from a recent thread showing where the schraeder valve is 


Originally posted by lobuzz311 lobuzz311 wrote:




Since you have a gauge, now you can check pressure when it won't start  then you'll maybe know where to throw money next instead of guessing. Wink


54 Atom

77 Tique

64 X55 Dunphy

Keep it original, Pete
<
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MrMcD View Drop Down
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Points: 3776 		Post Options Post Options   Thanks (0) Thanks(0)   Quote MrMcD Quote  Post ReplyReply Direct Link To This Post Posted: July-10-2021 at 7:02pm
Assuming it is fuel injected in 2003, most likely is low or zero fuel pressure.  The engine needs Air Fuel and Spark to run so work down the list.  A fuel pressure gauge is a nice tool to have to verify fuel pressure.
Checking spark is easy, pull one wire and hook it to a grounded spark plug and see if it sparks when you turn the engine over.
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JLawski View Drop Down
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Points: 4 		Post Options Post Options   Thanks (0) Thanks(0)   Quote JLawski Quote  Post ReplyReply Direct Link To This Post Posted: July-10-2021 at 6:12pm
My 2003 196 limited will turnover but not run.I checked off all the usual suspects,fuel in tank,kill switch fuel pump engaging still no luck,any thoughts where to start?  
JLawski
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