Slow diesel starting until...

[Dmace]

Uh.. DM.. you might want to check your science there.

Octane rating for a gasser is more of an anti-knock/ping/run on rating. the higher the rating, the HARDER it is to ignite the fuel. That's why some super machines and hi-powered road racers use 100 octane fuel to burn in their high compression , high rpm engines.

Yes, higher octane is harder to burn at high temps and under high compression therefor causing less pre-detonation on gas powered vehicles, but the higher octane fuel is easier to burn under cold temps due to the lower flash point just as diesel is easier to burn at cold temps with higher cetane value.

boosts cetane up to 4 numbers for faster cold starts

 

[Soundguy]

I made no mention of cetane NOT helping diesels. And the last 100 octane pump i saw for gas had an explicit warning saying that cold starting would be difficult using the 100 octane gas.

soundguy

 

[Ron D.]

I stated a couple of days ago that I had just started using the Powerservice silver bottle diesel additive. Since my last post (6/8), I've had to replace two fuel lines because of cracks/leaks. I know the additive did not cause the fuel lines to develop cracks because the lines look old and a little brittle. I need to replace all of them when I get a little time. I am wondering if the additive cleaned gum out of the system that may have been sealing the cracks in the fuel lines. Can fuel gum be solid enough to seal a crack? Anyone got an opinion? It just seems odd that I would develop two leaking lines a few days after using the Powerservice/Diesel Clean additive.

 

[California]

Could happen. I put pure Power Service in the little fuel bottle for the Thermostart (manifold heater) on my Yanmar and it softened the plastic. After I cleaned it out and went back to using diesel as intended, the bottle is fine now. This plastic is like milk-bottle plastic - I forget the proper name.

I'm using Power Service (silver) in B90 biodiesel and don't see any fuel hose issues. But the hose is fairly new, replaced in 2004.

 

[Soundguy]

some kind of vinyl perhaps?

soundguy

 

[California]

Vinyl fuel hose? I dunno. It's whatever NAPA sells as standard hose.

 

[Coyote machine]

It might be similar to the ethanol eating into older fuel lines and causing driveability problems on outboard boat motor(s) fuel lines. I'd see what the bottle says as to what it might not want to be in contact with- ie. certain compositions of fuel lines, etc. Also find out what the line is made of from your NAPA store.
And I would suspect that gum in existing fuel lines that are old could be cleaned to the point of leaking for the same reason it is called PS Diesel CLEAN?!
Post back results of your findings to share with us- thanks!

 

[Skyco]

Vinyl fuel hose? I dunno. It's whatever NAPA sells as standard hose.

That could be your problem, you need to make sure that hose is rated for diesel, some is just gasoline rated. Some hose is diesel rated but not bio-diesel rated also.

 

[California]

No, no, no. I'm not the guy with a problem. Ron D is the one with the cracked fuel lines.

I noted that straight PS softened a 30 year old fuel reservoir made from that same semi-transparent plastic as milk bottles and Tupperware. Then after refilling the reservoir with diesel the problem went away.

Also, that whatever NAPA sells for fuel hose is working great for B90 with PS.

 

[irvingj]

Milk bottles are HDPE, high density polyethylene. I believe Tupperware items are also polyethylene.