Fuel leaking, misfiring and exhaust leak. Please help

[92 spectrum 150]

I'll explain my problems the best I can one by one. I'm still new at this so bare with me

1. I'm leaking fuel from my vro unit. I've attached a picture for reference. From the picture, it's leaking from the top where the philips screws are mounted to the unit. I'm not sure if there's a gasket or not but it's leaking from there when my motor misfires. The leaks syncs with the misfire if that makes any sense. So when the motor misfires, as soon as it "thumps", fuel will spray from that spot.

2. From the picture with the wires, I'm leaking exhaust from the plate is mounted to the motor. It's that plate where the bolt is. It shoots a puff of smoke when the motor misfires. Not sure how to seal it or if it needs a new gasket.

3. The misfiring! Not sure if all the above is causing a misfire or what but it misses when only in idle. If you high rev it or in gear it doesn't seem to misfire. The motor ran great a couple weeks ago then suddenly it just started to misfire only in idle. If I do not high idle it, the motor will miss and die. The only way to keep it running in idle is high idle.

I have a video of the exhaust leak but not sure how to post it up.

 

[92 spectrum 150]

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[92 spectrum 150]

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[emdsapmgr]

Your engine may have a "lean sneeze." An occasional miss at idle. Common problem. A carb issue. When the small idle passages in the carbs get restricted with dried fuel over the years, the engine will run lean at idle and will occasionally miss/sneeze it idle. This is sort of a backfire and can affect the pulse line going to the fuel pump.If that's what's going on, you need to remove the carbs, disassemble them and clean out the carb passages. Keep in mind you need to dissolve any dried fuel gel inside those passages-where you can't see. An aerosol product called Gumout works well. There is a significant gasket between the powerhead and the exhaust adapter. Those can fail over the years, permitting exhaust to leak into the cowling. Usually accompanied with some black tarry fluid leaking down from the bottom of the powerhead. The gasket can be replaced by pulling the powerhead, cleaning and installing a new base gasket. While this powerhead gasket failure is more common on the 4-cyl crossflows, it is not so common on the V6 crossflow engines. Typically a 3 hour job.

 

[92 spectrum 150]

What about the leaking vro pump?

As I did some more research, it seems like that end I was referring to is the oil part of the vro. My vro has been disconnected and running premix. Should I be replacing that vro pump since it's leaking? I'm thinking about switching to the newer pre-mix only fuel pump #5007422.

I've also seen some other style for the v6 90 degree or 60 degree ones that are a lot smaller and uses a custom mount. Will these work also? They're a lot cheaper too.

 

[92 spectrum 150]

What about the leaking vro pump?

As I did some more research, it seems like that end I was referring to is the oil part of the vro. My vro has been disconnected and running premix. Should I be replacing that vro pump since it's leaking? I'm thinking about switching to the newer pre-mix only fuel pump #5007422.

I've also seen some other style for the v6 90 degree or 60 degree ones that are a lot smaller and uses a custom mount. Will these work also? They're a lot cheaper too.

 

[92 spectrum 150]

What about the leaking vro pump?

As I did some more research, it seems like that end I was referring to is the oil part of the vro. My vro has been disconnected and running premix. Should I be replacing that vro pump since it's leaking? I'm thinking about switching to the newer pre-mix only fuel pump #5007422.

I've also seen some other style for the v6 90 degree or 60 degree ones that are a lot smaller and uses a custom mount. Will these work also? They're a lot cheaper too.

 

[92 spectrum 150]

Any help?

 

[emdsapmgr]

The 5007422 pump looks like the original factory pump, except it has no oil diaphragm. It's a newer version of the older premix pumps and runs on that single pulse line. It may save you 80-100 dollars over the standard factory replacement pump. Works well. The other option you alluded to may have been the use of the smaller dual premix pumps, last used on the 1983 V6 engines. Those also work well, but you'll have to set up the block for a second pulse line to drive pump #2. Not a big deal. These also work well.

 

[92 spectrum 150]

The 5007422 pump looks like the original factory pump, except it has no oil diaphragm. It's a newer version of the older premix pumps and runs on that single pulse line. It may save you 80-100 dollars over the standard factory replacement pump. Works well. The other option you alluded to may have been the use of the smaller dual premix pumps, last used on the 1983 V6 engines. Those also work well, but you'll have to set up the block for a second pulse line to drive pump #2. Not a big deal. These also work well.

Do you have a diagram to run 2 pumps? So is there really no other way to run a single pump besides 5007422? Cheapest I can find 5007422 is $325 online