Error code 520800 7. 2008 343 excal

[Willhamm]

2008 343 excal. Had 2 cracked heads (engine still ran fine. No lights) after removing them, i see the block was also ate up with corrosion so I had a new long block installed. Now i am getting an eng warning light. It will idle all day long, at 1500rpm light comes on after 24seconds. At 2k rpm it comes on 8 seconds.
The timing is set to specs 16* retard. We tried adjusting timing and it helps with light but eventually still comes on.
code 520800 7.
Anyone see or hear of this before?

[jpwhit]

See the attached Service Bulletin on setting timing on Excalibur engines. That error code isn't in the typical format that I recognize.

#SUP2003-06
PCM Service Update Information on Setting CAM Retard

This is an informational update in order to provide you with some information that may assist you in setting the CAM
retard on ALL 2002-2004 PCM 5.0L (Pro Ski) and 5.7L (Excalibur) engines.
The ignition system on the affected engines is unique to any ignition system PCM has built in the past. There could
be a misunderstanding as to what a technician is doing to the engine when the distributor assembly is rotated. In
the past, rotating the distributor would advance or retard the ignition timing. This was done in order to properly set
the base ignition timing.
However, when rotating the distributor on the affected engines, you are not setting ignition timing. The ignition timing is
not affected by rotating the distributor. The ignition timing is 100% computer controlled on these applications.
When rotating the distributor on the affected engines, you are adjusting what is called “CAM Retard.” This parameter
represents the position of the distributor rotor relative to the proper terminal in the distributor cap when the spark
is delivered. This parameter MUST be 43-47 degrees or driveability problems will exist. Some of the symptoms, but
not limited to, are as follows:
• Backfi re
• Loss of power
• Sluggish
• Hesitation
In order to properly set the CAM retard, one of the following scan tools MUST be used:
Hand-held Scan Tool: PC Based Diagnostic Software:
Rinda Techmate Diacom
(Purchased through Rinda (Purchased through PCM,
Technologies, P/N 94040) P/N RT0086)
1. Hook up the scan tool or laptop to the data link connector.
2. Per the tool instructions, navigate through the tool in order to view ECM data.
3. Find the engine parameter labelled “CAM Retard.”
4. Engine must be running in order to view the CAM Retard value.
5. CAM Retard value MUST be set at 43-47 degrees. If the value is within specification, make sure the
distributor hold down bolt is tight.
6. If the value is outside the specification, loosen the distributor hold down bolt and slowly rotate the distributor until
a value of 43-47 degrees is achieved. Tighten the hold down bolt securely, making sure the CAM Retard value
does not go outside of the specification. Once the distributor hold down is tightened, verify the value still remains
between 43-47 degrees.
Important: The basic principle that the distributor must be installed into the engine properly still exists. If the proper
CAM Retard cannot be achieved, check the installation of the distributor.
Engines Affected: 2002-2004 5.0L MPI (Pro Ski) ALL Model Number: Last Digit “M”
2002-2004 5.7L MPI (Excalibur) ALL
Published by Pleasurecraft Engine Group Training Services. Pleasurecraft’s policy of continued improvement creates dated information and necessitates changes in procedures, speci cations
and methods used in trouble shooting and repair. In the event you have any questions regarding any of our products, the most up to date information may be obtained by contacting our
service department to insure that any published information in your possession has not been updated. The information in the publication is believed to be true and correct at the time of
publication. This publication is for informational purposes only and does not constitute a guarantee or warranty or in any way change or modify the written warranty, which is attached to
PCM Products at the time of sale. The knowledge of this publication, the information revealed herein and/or the possession of this publication grants no license or authority to anyone
to perform any action or make any statement or commitment, beyond the speci c instructions stated herein, in behalf of or in the name of Pleasurecraft Engine Group. It is the sole
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using the information contained herein agree to defend and hold Pleasurecraft Engine Group harmless in all cases where injury and/or damage may occur during the use and/or application
of the information contained herein.

[Willhamm]

Thank you for that info. I will look into it deeper but i have a 2008 so sure it pertains to my problem.
btw, the boat runs fine with no loss of power, just feels like there is a miss fire and light comes on. When i shut down and restart, light goes out until i reach rpm higher than 1400

[jpwhit]

Having the Cam Retard set wrong can cause misfire. And a misfire will set the check engine light. The Cam Retard basically is setting the position of the terminal on the distributor cap relative to the rotor position when the coil fires. If it's set wrong, the distance between the rotor and the correct pin in the distributor cap will be too far and the plug won't fire, or worse case, the spark will jump to the wrong pin and fire the wrong plug.

[Willhamm]

Yes I understand that that. We set the distributor (cam retard) to the 16* spec listed on the info sticker on engine and according to dealer. Thats why its blowing our minds.
again, everything thing set to specs, cranks and runs fine. I can feel what feels like a slight miss and when rpm is increased, the light comes on.
Could oil have something to do with it?
i read it gets its advance from when oil pressure increases. That makes since that something is not advancing as it should.

[Willhamm]

Issue resolved. There was an update that stated a certain range of engine serial numbers require that retard to be set at six. The dealer i took it to did not have that info. Once the correct retard was set, no more light or misfire. Go figure.
however when i put it in the water to finish up the top end break in, after about 20min of operation, i got it to 3600rpm and motor shut down. I briefly tried to crank but was very sluggish. Checked batteries and both were still at 12.5.
Any ideas?