Forum: Troubleshooting
05-06-2023, 10:35 PM
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Replies: 6
Views: 1,234
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Forum: Troubleshooting
05-06-2023, 12:28 AM
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Replies: 6
Views: 1,234
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Forum: Troubleshooting
05-03-2023, 11:52 PM
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Replies: 6
Views: 1,234
Aft most valve stuck
Hi all. Just had to unstick the last valve (cylinder 4) closest to coil end of engine. The trouble was that 3 and 4 cylinders were not firing. After compression test found 1, 2 and 3 with 70 or so...
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Forum: General Maintenance
10-13-2022, 11:04 AM
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Replies: 5
Views: 1,950
Thanks
Thanks Tenders for the coupler offering. I have 7/8" shaft however so unable to take you up on the offer.
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Forum: General Maintenance
10-06-2022, 10:36 PM
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Replies: 5
Views: 1,950
Got the thing apart! Thanks to all.
Well I got the rust welded coupler apart.
For to help others: 1st I had to beat the scale off it with ball peen and cold chisel. Then used a stiff wire wheel on angle grinder till I could finally...
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Forum: General Maintenance
10-06-2022, 01:38 PM
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Replies: 5
Views: 1,950
Shaft coupling
Hi all. I have inherited a running A4 if I can get it out of the boat. Trouble is that the p o has ground the heads off the 3 shaft coupling bolts and rounded the set screw beyond use. Question is...
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Forum: Troubleshooting
11-19-2021, 04:35 PM
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Replies: 6
Views: 1,390
Dave, thanks as always for your help. It seems...
Dave, thanks as always for your help. It seems that the prop cleaning has actually worked better than I immediately reported. On two subsequent outings I was able to get the power back up to where it...
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Forum: Troubleshooting
11-09-2021, 12:14 PM
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Replies: 6
Views: 1,390
Hi Dave, I am not sure of the size and pitch...
Hi Dave, I am not sure of the size and pitch exactly but before the engine work there was no trouble at all with getting the boat to do hull speed at about 1800 rpm so I am doubtful that the prop...
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Forum: Troubleshooting
11-08-2021, 08:49 PM
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Replies: 6
Views: 1,390
was cavitation but now just doesn't have power
Hi All, I have recently gone through a valve job, new manifold and exhaust rebuild! I got the engine back running quite well and then went to test her out. The trouble is that after sitting at the...
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Forum: Exhaust System
08-31-2021, 08:56 AM
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Replies: 2
Views: 1,701
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Forum: Exhaust System
08-30-2021, 07:17 PM
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Replies: 2
Views: 1,701
Exhaust make up question
Hello A4 people! I am building an exhaust and have placed the water er injection point lower than previous design and almost exactly the same as Edward C had kindly posted pictures of that I am...
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Forum: Overhaul
07-29-2021, 01:23 PM
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Replies: 5
Views: 2,083
Slick idea to fix pitted valve seat
So as the summer of discontent plods forward I had to find a way to fix up badly pitted valve seat. After some research I stumbled on a video by a young man who cut 3 very small bits of 100 grit sand...
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Forum: Overhaul
07-19-2021, 07:28 PM
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Replies: 5
Views: 2,083
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Forum: Overhaul
07-19-2021, 06:30 PM
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Replies: 5
Views: 2,083
A valve grinding tool for #4 exhaust?
7 of 8 valves and seats lapped and ready to go back in! However, the #4 exhaust valve was badly pitted and I ordered new one. Question is is there a tool or grinding stone I might be able to use to...
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Forum: Troubleshooting
07-15-2021, 09:31 PM
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Replies: 0
Views: 1,164
Not feeling allen wrench trick for stuck valves
Hi everyone, Just a quick thought on the advice of trying to free a stuck valve using an allen wrench through spark plug hole. I tried this recently after no luck freeing a stuck valve through valve...
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Forum: Overhaul
07-15-2021, 08:18 PM
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Replies: 18
Views: 3,019
The quest continues!
So for to possibly be helpful to others I will report.
Having gotten in way over my head on the sailboat engine I found that:
1. My exhaust got a clog that led to water intrusion and the usual...
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Forum: Overhaul
07-12-2021, 09:39 PM
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Replies: 18
Views: 3,019
After examining the exhaust more closely what I...
After examining the exhaust more closely what I have is very close to the MMI tfitting that Joe linked. The difference is that the pipe within the 1 1/4" had a bunch of holes drilled across it that...
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Forum: Overhaul
07-11-2021, 11:02 AM
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Replies: 18
Views: 3,019
Thanks EdwardC for the pictures it looks like a...
Thanks EdwardC for the pictures it looks like a pretty simple remedy. As to anti siphon I don't really know whether it would be needed or not. Have you had good success with your set up and do I need...
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Forum: Overhaul
07-10-2021, 11:46 PM
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Replies: 18
Views: 3,019
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Forum: Overhaul
07-10-2021, 11:10 PM
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Replies: 18
Views: 3,019
I am in pretty deep now!
Well it appears I have either gotten carried away or am doing due diligence. Either way I have a lot of work to do and would be very grateful for any input from fellow A4ourians.
After an...
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Forum: Exhaust System
06-25-2021, 04:32 PM
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Replies: 2
Views: 992
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Forum: Exhaust System
06-25-2021, 03:15 PM
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Replies: 2
Views: 992
Compression testing question
Going to check compression and wondered what to do about fuel during test. I know toermove coil wire and have seen recommendations to disconnect electric fuel pump. What, if any thing to do if I have...
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Forum: Cooling System
06-17-2021, 09:34 PM
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Replies: 14
Views: 2,758
Vinegar soaking worked very well.
Thanks to all who weighed in to help with the over heating issue. For to possibly help others I will report.
I filled the engine with as much white vinegar as it would hold after removing the...
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Forum: Cooling System
06-08-2021, 04:46 PM
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Replies: 14
Views: 2,758
I did do that at the time of head gasket job....
I did do that at the time of head gasket job. Cleaned tstat right up by vinegar soaking first then heated it up in pot of water with thermometer in it and it opened up at about 160 if I remember....
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Forum: Cooling System
06-08-2021, 10:51 AM
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Replies: 14
Views: 2,758
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