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Search: Posts Made By: edwardc
Forum: General Interest 10-12-2022, 11:46 AM
Replies: 7
Views: 669
Posted By edwardc
Nate, It's still possible that a valve...

Nate,

It's still possible that a valve spring broke. This is not uncommon for an A4.

A broken spring provides less closing force on the valve and may allow the valve to "float" off of the cam...
Forum: General Interest 10-11-2022, 11:22 AM
Replies: 7
Views: 669
Posted By edwardc
4500 seems excessive. Although Universal never...

4500 seems excessive. Although Universal never seems to have published a "Redline", it advertised the engine as "30HP", which the power curve shows that it achieves at 3500 RPM.

In 2007, Don...
Forum: General Interest 09-24-2022, 07:30 AM
Replies: 6
Views: 872
Posted By edwardc
Interesting. I just converted mine to studs, and...

Interesting. I just converted mine to studs, and used 1 3/4” and they were still too short. With the studs fully seated in the manifold, there was barely enough sticking out of the flange for the...
Forum: Troubleshooting 09-21-2022, 12:12 PM
Replies: 12
Views: 769
Posted By edwardc
Another possibility: if you have an elbow...

Another possibility: if you have an elbow directly on the pump outlet, it’s a prime place to get clogged by broken vane bits.
Forum: General Interest 09-14-2022, 10:46 AM
Replies: 8
Views: 667
Posted By edwardc
Neil, Don, If the EWDS is going into...

Neil, Don,

If the EWDS is going into end-of-life support only, why not make the PC board CAD files public domain? This way, DIYers with electronics experience could use one of the PC Board...
Forum: Drive Train / Propellers 08-30-2022, 08:37 AM
Replies: 7
Views: 1,019
Posted By edwardc
That sounds to me like your forward clutch...

That sounds to me like your forward clutch assembly might be worn or damaged. Not sure where you might find replacements, other than salvaging them from another paragon assembly.
Forum: Troubleshooting 08-13-2022, 03:40 PM
Replies: 7
Views: 758
Posted By edwardc
One minute is about the time (depending on...

One minute is about the time (depending on throttle setting) that the engine will run on the gas that is in the carb float bowl. Check that your fuel pump has sufficient pressure AND flow.
Forum: Electrical 08-10-2022, 02:56 PM
Replies: 6
Views: 1,212
Posted By edwardc
An additional point to ponder. In the original...

An additional point to ponder. In the original "conventional" wiring diagram, a heavy #4 (or larger) cable runs from the battery switch output to the the main terminal on the solenoid. ALL other DC...
Forum: Troubleshooting 08-07-2022, 02:56 PM
Replies: 4
Views: 504
Posted By edwardc
My first thought was exhaust obstruction too. ...

My first thought was exhaust obstruction too. Anything that makes it hard for the engine to "breathe" will limit the maximum horsepower.

The two commonest causes of exhaust obstructions are
...
Forum: Exhaust System 08-07-2022, 02:48 PM
Replies: 12
Views: 1,451
Posted By edwardc
Because of the aforementioned family situation,...

Because of the aforementioned family situation, I've only been able to get down to the boat once about once a week, so progress has been slow. Here's a somewhat scattered update:

Got a second...
Forum: Troubleshooting 08-07-2022, 01:49 PM
Replies: 13
Views: 1,105
Posted By edwardc
I second Dave's analysis. Most likely a shorted...

I second Dave's analysis. Most likely a shorted sender wire.
Forum: Fuel System 08-06-2022, 01:07 PM
Replies: 9
Views: 863
Posted By edwardc
An oscillating RPM is often caused by fine dirt...

An oscillating RPM is often caused by fine dirt in one of the jets. It momentarily leans the mix slightly as it passes through. Small amounts of water can do this too as a tiny droplet of water...
Forum: Exhaust System 07-17-2022, 11:28 PM
Replies: 12
Views: 1,451
Posted By edwardc
Wagner, Thanks for the kind words. They...

Wagner,

Thanks for the kind words. They really do help.

Meanwhile I've got a family emergency that has been taking up all my time.
I'll post more status when things calm down a bit.
Forum: Electrical 07-15-2022, 12:18 PM
Replies: 7
Views: 592
Posted By edwardc
Attached image shows one. The other is...

Attached image shows one. The other is diametrically opposite, Not visible in this image,
Forum: Exhaust System 07-14-2022, 11:41 AM
Replies: 12
Views: 1,451
Posted By edwardc
I know. It seemes excessive, even for 11 years. ...

I know. It seemes excessive, even for 11 years. Its possible that a defect in the weld for the backpressure testing boss was the starting point, but i would think that much corrosion would need...
Forum: Exhaust System 07-14-2022, 11:35 AM
Replies: 12
Views: 1,451
Posted By edwardc
No. Good tip. I'll try that on the lower bolt. ...

No. Good tip. I'll try that on the lower bolt.



Another good idea.



My geometry is such that the manifold can't come out until the riser is off, and the riser won't come off the short...
Forum: Exhaust System 07-14-2022, 11:25 AM
Replies: 12
Views: 1,451
Posted By edwardc
Yes, I know. I put the bolts in knowing that...

Yes, I know. I put the bolts in knowing that studs would be much better (I have them on the side plate). It just made the assembly much easier. I also suppose that in the back of my mind was the...
Forum: Exhaust System 07-13-2022, 03:38 PM
Replies: 12
Views: 1,451
Posted By edwardc
Exhaust leak

Appologies in advance for the long (but hopefully not rambling) post.

11 years ago, I built a new exhaust hot-section out of 316 Stainless pipe. I spent the extra on stainless so I would...
Forum: Exhaust System 07-06-2022, 11:55 AM
Replies: 18
Views: 1,196
Posted By edwardc
Looks very much like, if not identical to, the...

Looks very much like, if not identical to, the anti-siphion sold by MMI.
Forum: Exhaust System 06-23-2022, 11:58 AM
Replies: 18
Views: 1,196
Posted By edwardc
The anti-siphon valve must be located above the...

The anti-siphon valve must be located above the waterline in order to be effective.
Forum: Troubleshooting 06-20-2022, 11:40 AM
Replies: 7
Views: 608
Posted By edwardc
I have had Facet pumps fail before with the...

I have had Facet pumps fail before with the check-valve ball getting stuck. The test and quick fix is easy, but it won't last.

Simply open the bottom of the pump. It has a 3-prong bayonet style...
Forum: Troubleshooting 06-05-2022, 11:41 AM
Replies: 5
Views: 648
Posted By edwardc
I use Petite Barnacle Barrier on my prop, and...

I use Petite Barnacle Barrier on my prop, and that's exactly the same way it looks after cleaning. I found that a wire brush on a drill won't do much, but one of those paint-stripping disks that...
Forum: Exhaust System 06-05-2022, 11:26 AM
Replies: 4
Views: 569
Posted By edwardc
McMaster Carr sells stainless plumbing pipe and...

McMaster Carr sells stainless plumbing pipe and fittings, including schedule 80 and 316 SS. Assembling a hot section from these is no different than buliding one from black iron pipe. Its more...
Forum: Introductions 05-19-2022, 10:09 AM
Replies: 48
Views: 6,745
Posted By edwardc
The idle is unlikely to be the cause. The A4...

The idle is unlikely to be the cause. The A4 doesn't really have a "transmission" per se. In fwd it's a 1:1 direct drive, engaged by a friction clutch as the shift lever is moved into the fwd...
Forum: General Maintenance 05-13-2022, 06:20 PM
Replies: 4
Views: 653
Posted By edwardc
Tom, I have a V-drive too, and an MMI...

Tom,

I have a V-drive too, and an MMI manifold. My throttle mounting is very non-standard. The MMI manifold has exhaust ports on both ends, so the didn't have to manufacture two different...
Showing results 1 to 25 of 500

 
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