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Search: Posts Made By: lost2a6
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12-31-2016, 09:22 AM
Replies: 14
Views: 1,059
Posted By lost2a6

The bottom end "crankshaft" is locked up and...

The bottom end "crankshaft" is locked up and engine will have to be removed, rebuilt or replaced. My 454 did the same thing except mine would free back up when it cooled down. As soon as I would go...
12-30-2016, 01:53 PM
Replies: 26
Views: 2,959
Posted By lost2a6

Update, It's fixed!!!!:thumbsup::grin: The cam...

Update, It's fixed!!!!:thumbsup::grin: The cam timing had jumped on the crankshaft and was advanced about 50 deg. Why it did this I have no idea. There was a little dirt on top of the power head so I...
12-04-2016, 10:07 AM
Replies: 26
Views: 2,959
Posted By lost2a6

No, I'm 100% positive that it's not the injectors.

No, I'm 100% positive that it's not the injectors.
12-03-2016, 11:37 AM
Replies: 26
Views: 2,959
Posted By lost2a6

Yes, I did. I disconnected it and no change. I...

Yes, I did. I disconnected it and no change. I even jumped the two wires together and still no change. Also ohmed the switch and it ohmed out good.
12-02-2016, 12:06 PM
Replies: 26
Views: 2,959
Posted By lost2a6

So I tried to check the timing and I'm getting...

So I tried to check the timing and I'm getting very erratic signals, timing light will flash erratically. What this is telling me is it's firing every other cylinder as if it was in it's fail safe...
12-02-2016, 09:11 AM
Replies: 26
Views: 2,959
Posted By lost2a6

I haven't done a leak down however I did check...

I haven't done a leak down however I did check compression and it looked good. If it is a valve or spring, then it's all four cylinders, because all four vacuum readings are doing the same.
12-01-2016, 04:32 PM
Replies: 26
Views: 2,959
Posted By lost2a6

Update, I had to stop working on the boat for a...

Update, I had to stop working on the boat for a bit and just got back to it. I plugged in a spare manifold pressure sensor to the harness, without installing it into the manifold. I then attached a...
11-30-2016, 07:15 PM
Replies: 12
Views: 601
Posted By lost2a6

Also, just a FYI, the high speed jet is directly...

Also, just a FYI, the high speed jet is directly behind the carb bowl drain screw. If you pull the bowl, trying to find the high speed jet, you will not see it.
11-30-2016, 10:31 AM
Replies: 12
Views: 601
Posted By lost2a6

If you have two on each carb, one is going to be...

If you have two on each carb, one is going to be for idle and the other for mid range. If you have the idle screws and one air jet, then the air jet is going to be for mid range fuel and the screw...
11-14-2016, 05:37 AM
Replies: 26
Views: 2,959
Posted By lost2a6

If it just simply won't idle, I would suspect the...

If it just simply won't idle, I would suspect the ISC valve. However if this valve was bad, I don't seeing it making it run rich.
11-14-2016, 05:31 AM
Replies: 26
Views: 2,959
Posted By lost2a6

Not sure on this, I haven't checked. However it's...

Not sure on this, I haven't checked. However it's really rich even when it's dead cold.
11-13-2016, 10:28 AM
Replies: 26
Views: 2,959
Posted By lost2a6

I checked it against a service manual. Looked at...

I checked it against a service manual. Looked at temp vs ohms. My next step is to take a vacuum reading on each intake port. It appears that the pressure sensor reads vacuum on #1 cylinder only. If...
11-12-2016, 01:07 PM
Replies: 26
Views: 2,959
Posted By lost2a6

Ok, I found the air temp sensor and checked it,...

Ok, I found the air temp sensor and checked it, it ohmed out good. The sensor under the flywheel tells the ecm the temp of the engine, I checked it, and it ohmed out good as well. This leads me to...
11-12-2016, 11:25 AM
Replies: 26
Views: 2,959
Posted By lost2a6

Ok, that's a option. I'm not sure where these...

Ok, that's a option. I'm not sure where these sensors are located. There is a temp sensor under the flywheel, I'm assuming this is for the ECM, I haven't seen an air temp sensor.
11-11-2016, 03:25 PM
Replies: 26
Views: 2,959
Posted By lost2a6

Thanks, yes I pulled the VST vent hose off as...

Thanks, yes I pulled the VST vent hose off as well and it was still rich, I forgot to mention that. Voltage into the manifold pressure sensor is 5.0 and voltage into the TPS is 5.0 also.
11-11-2016, 11:54 AM
Replies: 26
Views: 2,959
Posted By lost2a6

Rich running Yamaha F150

I figured that I would start a new thread rather than keep adding to my old one. I have a 2007 Yamaha F150 that is running extremely rich. I'm at my wits end as to what's wrong with it or what else...
11-07-2016, 06:46 AM
Replies: 3
Views: 1,012
Posted By lost2a6

Just a update, obviously my manifold pressure...

Just a update, obviously my manifold pressure sensor is ok. Now I'm lost as to why the engine is running so pig rich. It's so rich that it smokes black soot, loads up, and is very hard just to get it...
11-01-2016, 06:38 PM
Replies: 3
Views: 1,012
Posted By lost2a6

Yes, intake manifold pressure sensor or map...

Yes, intake manifold pressure sensor or map sensor in the auto world. I did check it loaded. This gives me a reverence point, thanks.
11-01-2016, 05:56 PM
Replies: 28
Views: 1,706
Posted By lost2a6

Osco and Barr are very good manifolds, I can...

Osco and Barr are very good manifolds, I can promise you that Mercruiser doesn't make their manifolds, they source them out. I've got GLM on my boat right now, they have been on there for 6 yrs now...
11-01-2016, 04:52 PM
Replies: 3
Views: 1,012
Posted By lost2a6

Yamaha F150 pressure sensor values

Does anyone know what the voltage should be on a F150 pressure sensor. I have 5 VDC as a reference. With key on and not running it's sending 4 VDC back to the ECU. When I crank it, my volts to the...
11-08-2014, 08:24 PM
Replies: 9
Views: 1,181
Posted By lost2a6

I believe that is normal. My brother just rebuilt...

I believe that is normal. My brother just rebuilt the rear in his 2010 Dodge 3500 and experienced the same problem. Just compensate for it and set the clearance high with the caps loose, torque the...
06-12-2014, 04:56 PM
Replies: 14
Views: 1,653
Posted By lost2a6

I have a old Duramax (2001) 4X4 and get around...

I have a old Duramax (2001) 4X4 and get around 11-12 pulling my old 23ft SeaCraft at 75 MPH. Your numbers are low but it's because of all of the emission crap that is on it. Delete all of that...
04-27-2014, 05:27 PM
Replies: 82
Views: 9,119
Posted By lost2a6

Are you using the click style torque wrench? You...

Are you using the click style torque wrench? You need a 1/2 drive click style wrench. Set the setting on 95 ft.lbs start tighting and when you feel, hear it click then stop. Make sure you have a good...
04-13-2014, 04:33 AM
Replies: 77
Views: 5,317
Posted By lost2a6

I try to park all of my vehicles away from...

I try to park all of my vehicles away from others. I usually try to find a end parking spot and stay close to the curb. Dents dings and scratches affects resale value, also if you keep a vehicle for...
12-20-2013, 03:05 PM
Replies: 28
Views: 2,593
Posted By lost2a6

You're going to have a hard time finding a E...

You're going to have a hard time finding a E rated LT tire in a 15". I believe that you'll have to go up to a 16".
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