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Search: Posts Made By: JohnDenholm
Showing results 1 to 19 of 19
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Forum: General Q & A
08-24-2022, 05:36 AM
Replies: 0
Views: 440
Posted By JohnDenholm

525efi in gear switch.

Hi all.

525efi and bam transmissions. What's the benefit of having the engine linked to the gear limit switch on the transmission? Currently on the scan tool it shows 'in gear' even in neutral so...
Forum: Drives and Lower Units
08-11-2022, 09:43 AM
Replies: 5
Views: 1,794
Posted By JohnDenholm

Just to report back on this. Went through the...

Just to report back on this. Went through the engines again, no fuel or compression issues, no faults. Purged and corrected all the transmission fluid levels just to be sure not too low and not...
Forum: Drives and Lower Units
08-06-2022, 12:11 PM
Replies: 5
Views: 1,794
Posted By JohnDenholm

Thanks for your insights and ideas both. Mechanic...

Thanks for your insights and ideas both. Mechanic scanned both engines and we took the boat out with the computer connected. Didn't pick up sensor faults at all. They are doing more digging in the...
Forum: Drives and Lower Units
08-02-2022, 04:40 AM
Replies: 5
Views: 1,794
Posted By JohnDenholm

Testing for transmission issues, slippage etc...?

Hello from England. Currently trying to work out some ways to test if one of my transmissions may be slipping before removing it for servicing and writing off my season. Boat is a 2008 Velocity 390...
Forum: General Q & A
07-12-2021, 07:42 AM
Replies: 0
Views: 456
Posted By JohnDenholm

525 efi boat purchase. What to check on engines?

Good afternoon from the UK.

Looking at buying a second hand boat with reported 120 hours on everything. Comes with a pair of staggered Mercury 525 efi from I believe 2008/2009. Boat has sat barely...
Forum: General Q & A
04-03-2019, 02:10 PM
Replies: 12
Views: 3,494
Posted By JohnDenholm

I have just replaced my Raylar 496 with Raylar...

I have just replaced my Raylar 496 with Raylar 540, I only have 10 minutes test time with it as its still being set up but feels promising so far. As the video says everything bolts straight on,...
Forum: General Q & A
07-12-2018, 08:25 AM
Replies: 28
Views: 5,131
Posted By JohnDenholm

No info on the ECM sorry, but it is 100% the...

No info on the ECM sorry, but it is 100% the correct tune for this Raylar engine and not a stock 496.

Thanks for the good luck but Ive just been down to the workshop and based on finding a lot of...
Forum: General Q & A
07-12-2018, 04:18 AM
Replies: 28
Views: 5,131
Posted By JohnDenholm

Id be interested to hear the results of your...

Id be interested to hear the results of your call. Last thing I want is to waste power.

Currently engine is out of the boat, the source of the noise couldnt be found under the valve covers so...
Forum: General Q & A
07-11-2018, 01:48 AM
Replies: 28
Views: 5,131
Posted By JohnDenholm

CMI Etube. They have the temperature sensor ports...

CMI Etube. They have the temperature sensor ports but no ports to fit O2 sensors. Saw somewhere on here that people holesaw the exhaust, dimple the two layers together with a pall pein hammer, weld...
Forum: General Q & A
07-10-2018, 09:34 AM
Replies: 28
Views: 5,131
Posted By JohnDenholm

Cool fuel is gone. Installed a larger Racor...

Cool fuel is gone. Installed a larger Racor filter in line with tank then Fuelab pump and filter down in the bilge then up to Fuelab elecronic regulator on engine which feeds fuel rail and bypasses...
Forum: General Q & A
07-10-2018, 07:43 AM
Replies: 28
Views: 5,131
Posted By JohnDenholm

Dont I know it, kind of knew what I was letting...

Dont I know it, kind of knew what I was letting myself in for, wasnt expecting so many p!!s takers in the marine industry but you live and learn the hard way sometimes.



Currently at 50psi...
Forum: General Q & A
07-10-2018, 05:20 AM
Replies: 28
Views: 5,131
Posted By JohnDenholm

Hello everyone. I thought it right to return with...

Hello everyone. I thought it right to return with some info as you were all helpful with your suggestions.

Firstly I ditched the previous company that was doing work for me, I wasted so much money...
Forum: General Q & A
08-25-2017, 04:51 PM
Replies: 28
Views: 5,131
Posted By JohnDenholm

He did not as he doesnt believe he can get hold...

He did not as he doesnt believe he can get hold of the right one. The one that came with this engine looks different to the stock regulator.
Forum: General Q & A
08-25-2017, 03:12 PM
Replies: 28
Views: 5,131
Posted By JohnDenholm

Ok so a month has gone by and Ive had very little...

Ok so a month has gone by and Ive had very little time to sort the boat. Mechanics findings were that the fuel pressure is all over the place, sometimes as low as 35psi, sometime shoots over 70psi,...
Forum: General Q & A
07-06-2017, 05:39 AM
Replies: 28
Views: 5,131
Posted By JohnDenholm

Thanks BUP. Added to the list for the mechanic to...

Thanks BUP. Added to the list for the mechanic to check .
Forum: General Q & A
07-03-2017, 06:05 PM
Replies: 28
Views: 5,131
Posted By JohnDenholm

Thats a neat install and some great information...

Thats a neat install and some great information thanks. Sounds like a lot to look into but I dont mind spending the time to figure it out. Il look into the O2 sensor but my headers arent set up for...
Forum: General Q & A
07-03-2017, 05:33 PM
Replies: 28
Views: 5,131
Posted By JohnDenholm

Unsure if I have a stock regulator in the cool...

Unsure if I have a stock regulator in the cool fuel, the engine was bought by one of the previous owners of the boat from Raylar as a complete engine before they stopped doing them and just sold the...
Forum: General Q & A
07-03-2017, 04:36 PM
Replies: 28
Views: 5,131
Posted By JohnDenholm

Ok thats a big help, thanks. I should be back...

Ok thats a big help, thanks. I should be back down there this week so will see what its running.
Forum: General Q & A
07-03-2017, 02:30 PM
Replies: 28
Views: 5,131
Posted By JohnDenholm

496/Raylar HO600 fuel questions

Good evening from the UK, I hope you are all well.

I bought a Donzi 26 with a Raylar HO600 engine (OW317280) last year and I have a few questions if anyone can help.

Ater the boat runs out of...
Showing results 1 to 19 of 19


 
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