Tank to pump hose routing

[chaseincats]

2 hours ago, Captain Obvious said:

Those numbers look great. 

Here's hoping it was as simple as bad gas!! Hope it doesn't come back!!!

Me too!  We'll see how it starts tomorrow morning as the final test.

I bought a bottle of fuel stabilizer after I got out of the car today haha.

[Captain Obvious]

19 hours ago, chaseincats said:

AFR numbers: 13.8-14.2 idle, cruise 14.7, WOT 12.8

Oh, and your AFR numbers look great too. And just for a data point, they are pretty much the same as my 77.  Idle should be a small amount rich, cruise could be a small amount lean, and WOT should be about two points lower than the others.

On my 77, mine runs a little leaner at cruise. Not sure how I managed to do that, but I'll run low 15's at light load cruise. But if I stick my foot in it, it'll snap down to 12.8 just like yours. Kinda cool to feather the gas pedal right where the WOT switch on the throttle body opens and closes and watch the AFR gauge snap back and forth between 12.8 and 14.7.

[chaseincats]

1 hour ago, Captain Obvious said:

Oh, and your AFR numbers look great too. And just for a data point, they are pretty much the same as my 77.  Idle should be a small amount rich, cruise could be a small amount lean, and WOT should be about two points lower than the others.

On my 77, mine runs a little leaner at cruise. Not sure how I managed to do that, but I'll run low 15's at light load cruise. But if I stick my foot in it, it'll snap down to 12.8 just like yours. Kinda cool to feather the gas pedal right where the WOT switch on the throttle body opens and closes and watch the AFR gauge snap back and forth between 12.8 and 14.7.

If I had to guess, you have your afm set 3 teeth leaner than the original setting since those are the numbers I got with 3 teeth lean (black gear turned clockwise) - my numbers are from leaning it by 2 teeth.

If memory serves 3 teeth got me: idle: 14.2, cruise 15ish, WOT 13.1

Timing to get into cruise was set following the AtlanticZ TPS tutorial here

I hope that helps!

[chaseincats]

Update: so I tried to give it a start today and it definitely still put up a fight - but I'd say less so.  My assumption is we'll be back to normal after I give it a full tank of gas to dilute the old stuff that's in there.

Here's the plan - I'll keep you updated in the coming weeks:

1. take the car out again to confirm it wasn't a fluke

2. change the 3/8 hoses to 5/16 like its supposed to have

3. buy fuel stabilizer

4. fill the tank

Edited February 9 by chaseincats

[siteunseen]

Hard starting could be from loosing pressure...the gas you're smelling.

I good valve adjustment seems to make mine start quicker.

[chaseincats]

5 hours ago, siteunseen said:

Hard starting could be from loosing pressure...the gas you're smelling.

I good valve adjustment seems to make mine start quicker.

That makes sense - have you tried the gasoline sniffer I linked (or any)?

[chaseincats]

Update: No more losing fuel pressure as all of the connectors leaking fuel vapor are now tight and no longer leaking - still a mystery how the hoses either got all squished or all of the clamps backed out, but I suppose that's a mystery for another day.  Regarding the hard starting - that is still there but maybe that will go away once I fill the tank?

Thinking about putting a bottle of fuel injector cleaner in the tank after all of this.  Does anyone have any thoughts or recommendations on products?  For example, something like this.

Edited Saturday at 03:53 PM by chaseincats

[Captain Obvious]

Cool. Sounds like good progress.

So how's the lean running thing? Is that still gone?

[chaseincats]

6 hours ago, Captain Obvious said:

Cool. Sounds like good progress.

So how's the lean running thing? Is that still gone?

I actually haven't driven it again yet.  The next drive would be to fill the tank but was waiting on a thumbs up or down on if the lucas injector cleaner bottle is safe to put in our cars.  Any idea?

Edited Sunday at 08:07 AM by chaseincats

[Yarb]

SeaFoam

[Mark Maras]

21 hours ago, chaseincats said:

Update: No more losing fuel pressure as all of the connectors leaking fuel vapor are now tight and no longer leaking - still a mystery how the hoses either got all squished or all of the clamps backed out, but I suppose that's a mystery for another day.  Regarding the hard starting - that is still there but maybe that will go away once I fill the tank?

Thinking about putting a bottle of fuel injector cleaner in the tank after all of this.  Does anyone have any thoughts or recommendations on products?  For example, something like this.

 I believe there are two different snake oils for injection. One is a solvent that breaks down corrosion. The other is a lubricant that frequently uses mineral oil to lube the injectors. The one you've shown is a lubricant. Some products may contain solvent and oil but the little I've studied them, it appears it is either one or the other.

[chaseincats]

Gotcha - in this case, I'm trying to make sure the injectors aren't gunked up from the old gas.  The more I sleep on this whole story the more it makes me question it.  Maybe I'm wrong?

The short story is:

• I put gas in the car in late October
• Had the issue where the old fuel hose blew on the freeway
• Let the car sit until a couple weeks ago
• The car had no power and ran lean
• Fuel pressure was perfect and no vacuum leaks after checking both
• Took the car out (and was running poorly like it had been - very down on power)
• Immediately got a few gallons of gas since it was almost empty
• After a minute or so, the car came back to life and the power returned

Does gas really become less combustible that quickly?

-chase

Edited Sunday at 05:57 PM by chaseincats