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Search: Posts Made By: JOHN COOKSON
Forum: Electrical 01-12-2022, 05:33 PM
Replies: 3
Views: 406
Posted By JOHN COOKSON
One ohm meter probe on the body of the sending...

One ohm meter probe on the body of the sending unit and the other probe on the head. S\B zero ohms, of course.

ex TRUE GRIT
Forum: Introductions 01-08-2022, 03:41 PM
Replies: 25
Views: 2,190
Posted By JOHN COOKSON
A quick thought R\E the hard start\no idle issue....

A quick thought R\E the hard start\no idle issue.
How long has it been since you serviced the advance (under the distributor breaker plate) and checked the timing?

Try shifing into and out of...
Forum: Fuel System 12-30-2021, 11:12 AM
Replies: 25
Views: 1,759
Posted By JOHN COOKSON
Were you using graphite core or solid core high...

Were you using graphite core or solid core high voltage wires that failed over time? Copper core should last indefinitely where as graphite core spark plug wires will fail over time.
IMO graphite...
Forum: Fuel System 12-27-2021, 05:41 PM
Replies: 25
Views: 1,759
Posted By JOHN COOKSON
SIDE NOTE TO SHAWN

If you have points....
Sometimes points don't conduct well after being unused for awhile. "Just for fun" try passing a points file between the points contacts to see if it helps the reluctant...
Forum: Cooling System 12-21-2021, 06:42 PM
Replies: 4
Views: 833
Posted By JOHN COOKSON
A bit of reserve cooling capacity is good to...

A bit of reserve cooling capacity is good to have. IMO you are on the right track.
If after confirming good water flow through the engine*, and a acid flush you are not happy with the result try...
Forum: Fuel System 12-19-2021, 11:21 AM
Replies: 25
Views: 1,759
Posted By JOHN COOKSON
This is the ideal set up. On some boats (such as...

This is the ideal set up. On some boats (such as my ex Cat 27) it was necessary to modify to achieve this. The cable was suspended in space between the cockpit and carb until I fixed it. In any case...
Forum: Fuel System 12-18-2021, 05:38 PM
Replies: 25
Views: 1,759
Posted By JOHN COOKSON
If you need choke adjusting instructions let me...

If you need choke adjusting instructions let me know.

ex TRUE GRIT
Forum: Fuel System 12-18-2021, 11:26 AM
Replies: 25
Views: 1,759
Posted By JOHN COOKSON
I think it's the or these. It's been a few years...

I think it's the or these. It's been a few years since I've done this. The little circular plate that has the fixed arm attached needs to be rotated.
If necessary the angle that the choke cable...
Forum: Fuel System 12-18-2021, 11:09 AM
Replies: 25
Views: 1,759
Posted By JOHN COOKSON
You need adjust the fixed arm. There is a screw...

You need adjust the fixed arm. There is a screw that holds a sort of circular plate in place - that is where the adjustment is.
I scribed a line on the plate and carb body with diamond tip pencil...
Forum: Exhaust System 12-05-2021, 11:53 PM
Replies: 4
Views: 1,085
Posted By JOHN COOKSON
The yellow manifold doesn't have a threaded...

The yellow manifold doesn't have a threaded fitting that the rusty manifold has. I guess it is the fitting for the scavenge tube from the carburetor?
When you get this sorted out maybe studs rather...
Forum: Fuel System 11-29-2021, 05:44 PM
Replies: 2
Views: 844
Posted By JOHN COOKSON
Try asking Ken @ MMI when you return the pump. He...

Try asking Ken @ MMI when you return the pump. He knows a lot of A4 related stuff - he might know the answer to your question. No harm in trying.

ex TRUE GRIT
Forum: Troubleshooting 11-21-2021, 02:36 PM
Replies: 16
Views: 1,306
Posted By JOHN COOKSON
TANK VENT?

Did you try running with the fill cap slightly open to be sure the tank vent line is clear?

ex TRUE GRIT
Forum: Troubleshooting 11-21-2021, 02:27 PM
Replies: 7
Views: 1,046
Posted By JOHN COOKSON
I would definitely check the advance especially...

I would definitely check the advance especially if it has been a while since you serviced it.
Been down this road myself............

ex TRUE GRIT
Forum: Troubleshooting 11-18-2021, 05:33 PM
Replies: 16
Views: 1,306
Posted By JOHN COOKSON
Fuel pressure or fuel tank gauge? I used a JEGS...

Fuel pressure or fuel tank gauge?
I used a JEGS fuel pressure gauge - stainless steel case, glass lens, liquid filled. It worked well for many years.

ex TRUE GRIT
Forum: Troubleshooting 11-14-2021, 08:09 PM
Replies: 16
Views: 1,306
Posted By JOHN COOKSON
Here's possible scenario: If there is a filter...

Here's possible scenario:
If there is a filter on the end of the pick up inside the fuel tank:
The boat motion when under way stirs up crud that is in a low area of the tank close to the pick up...
Forum: Troubleshooting 11-13-2021, 02:03 AM
Replies: 23
Views: 2,085
Posted By JOHN COOKSON
Yes, it would be great if the polishing filter...

Yes, it would be great if the polishing filter stopped the (alleged) crud from entering the carb.
The only way to "check" the polishing filter if you don't have a fuel pressure gauge after it before...
Forum: General Interest 10-30-2021, 05:59 PM
Replies: 10
Views: 846
Posted By JOHN COOKSON
Here's a wiring diagram from my original A4...

Here's a wiring diagram from my original A4 manual.
Hope it helps.

ex TRUE GRIT
Forum: General Interest 10-30-2021, 10:45 AM
Replies: 10
Views: 846
Posted By JOHN COOKSON
I've never winterized a boat engine in my life. ...

I've never winterized a boat engine in my life.
With that in mind if there is no water in the cooling system why winterize? Clue me in.

ex TRUE GRIT
Forum: Troubleshooting 10-26-2021, 03:12 PM
Replies: 5
Views: 759
Posted By JOHN COOKSON
A dying coil will exhibit these symptoms. Do you...

A dying coil will exhibit these symptoms. Do you have an EI?

After the next shutdown check for spark by pulling the big wire out of the center of the distributor cap and hold it close to the...
Forum: Troubleshooting 10-20-2021, 09:08 PM
Replies: 18
Views: 1,560
Posted By JOHN COOKSON
Couple of possibilities. Crud in the carburetor...

Couple of possibilities.
Crud in the carburetor idle circuit. There are a couple of small holes (jets) in the carburetor throat by the throttle butterfly that feed gas to the engine when it is at...
Forum: Introductions 10-20-2021, 01:18 AM
Replies: 7
Views: 1,792
Posted By JOHN COOKSON
Get copy of the Moyer manual ...

Get copy of the Moyer manual
https://moyermarine.com/product-category/manuals/

Start with the easy basic stuff: Tune ups, oil changes, fuel system service.
You will get to know your engine...
Forum: Troubleshooting 10-20-2021, 12:51 AM
Replies: 18
Views: 1,560
Posted By JOHN COOKSON
Was the picture taken was the engine fully warmed...

Was the picture taken was the engine fully warmed up and at what RPM (idle or in gear?)? Does the smoke\steam become less or go away when the engine is fully warmed up? What do the spark plugs look...
Forum: Fuel System 10-19-2021, 12:32 AM
Replies: 2
Views: 917
Posted By JOHN COOKSON
Try servicing the advance (under the distributor...

Try servicing the advance (under the distributor breaker plate).
You will probably need to reset the timing since the advance influences timing.

ex TRUE GRIT
Forum: Cooling System 10-17-2021, 08:52 PM
Replies: 14
Views: 6,868
Posted By JOHN COOKSON
This is why I always used muriatic acid rather...

This is why I always used muriatic acid rather than vinegar. It can be done and over in a short time period compared to letting vinegar soak for a few days.

ex TRUE GRIT
Forum: Troubleshooting 10-15-2021, 12:47 AM
Replies: 30
Views: 2,526
Posted By JOHN COOKSON
In order for your engine to start and run you...

In order for your engine to start and run you need fuel, spark and compression delivered to the cylinders. The spark needs to be delivered at the correct time and the choke need to be functioning...
Showing results 1 to 25 of 500

 
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