67 With an 87 Multifuel - Got Some Questions

[ceetwarrior]

Hey guys, my '67 was overhauled with an '87 multifuel. It's a non whistler turbo.

Couple questions I'm curious to know. There's a small 1/8" red plastic hose that seems to be slowly leaking fuel. What is it, and what does it do? See pic 1.

Also, there's another plastic hose that is capped off by the turbo that goes to the air system. What is it? See pic 2. Do these hoses have to do with the 67 to 87 swap?

Last is the alternator setup. Or I'm assuming it's an alt not a generator. I'm assuming the 67 truck came with generator, that's what the gauge says. I'm getting 24v only, while running. I was doing some searching threads trying to figure out troubleshooting but after looking at the silicone job done on it I think I'll take it to a guy I know locally and have it gone through. See pic 3.
Thank you in advance.

 

[cattlerepairman]

1) and 2) are part of your flame heater cold start system that seems to have been partially decommissioned.

It should be completely removed (search for flame heater removal) or gone through and refurbished. The main issue with it when leaky is that it leaks diesel fuel into your crankcase, thinning out the engine oil.

"Deuce making oil" are fun threads to read.

3) the voltage regulator on the alternator is adjustable but yours looks like it needs a little help.

If you look into the technical manuals for the truck, you will find the systems all well illustrated and explained.

Sent from my SM-G950W using Tapatalk

 

[davidb56]

I'd put a multimeter directly to the batteries while running the engine around 1200+rpms and check the voltage. gauges are like politicians......they lie.

 

[18operator]

You should be getting close to 28 volts when running the engine at 1200 rpm. 25 to 27.5 volts depending on adjustment.

 

[ceetwarrior]

Thank you guys for the replies! I got a direction to go now, I'll report back soon.