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 Page 1 of 2 12
Username Post: bad gas        (Topic#332934)
Mike_Coyle 
Member
Posts: 237

Loc: Marietta, Ga.
Reg: 05-13-01
02-08-16 06:43 PM - Post#2607581    

Have 55 265 V8. 4 barrel Restored by daytona Parts. Works great. Last drove car in Sept. Went to start it recently and it wouldn't start. Poured a little gas in carb and it started for a few seconds. Put stabilizer in gas back in fall but maybe it didn't work. Short of taking carb off and sending it back to be cleaned, is there a way to unstop it? Fuel pump is working fine.

BelairMike


 

Rick_L 
Honored Member
Posts: 27306
Rick_L
Loc: Katy, Tx, USA
Reg: 07-06-00
02-08-16 08:34 PM - Post#2607601    
    In response to Mike_Coyle

I would try to confirm that your problem isn't 100% fuel related.

It just seems to me that the problem got bad pretty quickly, so I'd try to confirm whether you have an ignition problem too.

But if it is fuel, you're going to a need to take that carb apart, clean everything, and replace the gaskets. And it may be hard to diagnose ignition with a bad fuel problem.

Recently I had to do that, though mine sat longer. The needles and seats were stuck closed, no fuel coming in, and there was a sticky residue everywhere.



 
J REID 
Member
Posts: 693

Loc: SW Minnesota
Reg: 04-09-04
02-09-16 07:55 AM - Post#2607655    
    In response to Mike_Coyle

That ethanol mandate sucks sometimes

57 210 4dr, 57 2dr ht project, 67 Chevelle SS project, 40 Chev coup project


 
rcr3 
"14th Year" Silver Supporting Member
Posts: 2908
rcr3
Age: 66
Loc: Manheim Pa. U.S.A.
Reg: 11-24-02
02-09-16 08:03 AM - Post#2607658    
    In response to J REID

  • J REID Said:
That ethanol mandate sucks sometimes



It sucks all of the time .

'12 Cruze RS LTZ
'73 Nova hatchback Sold 12/23/12
'37 Chevy cp.SOLD!!6/7/14
'74 Nova Custom cp.
'73 Nova pro-street project
'17 Chevy Trax LT
'00 S10 Ex cab
'06 Z71 Sierra Ex Cab
'67 Camaro survivor




 
Mike_Coyle 
Member
Posts: 237

Loc: Marietta, Ga.
Reg: 05-13-01
02-09-16 12:32 PM - Post#2607719    
    In response to Rick_L

Thanks Rick,
I think the problem has been coming on slowly. Car restored in 2012. Has only 150 miles since restored. Won 1st. place in trailer restored class in 2012 at Smokey Mountain Classic Chevy Show.

BelairMike


 
0utlaw 
Very Senior Member
Posts: 2789
0utlaw
Loc: US East Coast
Reg: 09-10-02
02-09-16 05:24 PM - Post#2607782    
    In response to Mike_Coyle

September wasn't that long ago......especially where you live...no harsh weather.
Because it starts on a little gas, I'd guess that
before you do any disassembly on your carb, try some carb cleaner in the float vent and in the fuel line near the carb....your needle and seat may be simply gummed up and stuck. Also, a light tap on the carb in the needle area might be all you need.
Remember that your car may not run that good on cleaner so give it time to clear out.




 
Gene_Schneider 
Ultra Senior Member
Posts: 12107

Loc: Wisconsin..USA
Reg: 09-27-02
02-09-16 07:23 PM - Post#2607807    
    In response to 0utlaw

Normal. The gas evaporated out of the carburetor bowl. Stabalizer will not help that problem.

ChevGene 1934 Master sedan 1939 Master DeLuxe Town Sedan 1950 Styline DeLuxe Power Glide 1957 Nomad 283 PG 1963 Corvair Convertible


 
japete92 
"4th Year" Silver Supporting Member
Posts: 938
japete92
Loc: No. Virginia
Reg: 01-18-13
02-10-16 08:17 AM - Post#2607903    
    In response to Mike_Coyle

Awhile back, I started experiencing intermittent non-starting, rough running issues. I was getting desperate and frustrated because I could not figure out what was going on; nothing I tried worked until I discovered my gas tank was 'gunked up' and throwing out a mess of very fine 'stuff' that was causing the problem. After replacing the gas tank, blowing out the lines, and cleaning carb everything is fine. Not saying that's your problem but maybe.



 
J REID 
Member
Posts: 693

Loc: SW Minnesota
Reg: 04-09-04
02-10-16 12:19 PM - Post#2607943    
    In response to japete92

Where does the fine stuff come from? Just took my 2bbl apart & the bottom of bowl has what looks like real fine sand after only 3000 miles or so since last rebuild. I would have thought the filter would have kept this stuff out. Could this "fine stuff" have gotten into my power valve & be the cause of my carb going dry after sitting a day or 2?
I had to crank mine for quite a while too before it would start & that's why I have it tore down now. Hopefully it will be fixed when I get done. Good luck

57 210 4dr, 57 2dr ht project, 67 Chevelle SS project, 40 Chev coup project


 
japete92 
"4th Year" Silver Supporting Member
Posts: 938
japete92
Loc: No. Virginia
Reg: 01-18-13
02-10-16 05:20 PM - Post#2607996    
    In response to J REID

What appeared to be my issue was at some point in my car's life (before I bought it) it must have sat for some time (years, maybe?) with a partially filled gas tank. The gas evaporated but left a coating of congealed 'stuff' on the tank walls.

Fast forward to the running car I bought. Unknown to me, the more I ran the car the more powdery 'stuff' was sloughing off the tank walls. It varied in consistency and some of it was captured by the filter, but some it was so fine it got by into carb.







 
J REID 
Member
Posts: 693

Loc: SW Minnesota
Reg: 04-09-04
02-10-16 09:58 PM - Post#2608052    
    In response to japete92

I haven't dug mine out yet but it looks like fairly fine sand. I am baffled that it got thru the filter. I will be pulling/checking/changing the filter. Have a good one

57 210 4dr, 57 2dr ht project, 67 Chevelle SS project, 40 Chev coup project


 
models916 
Valued Contributor
Posts: 4774

Age: 67
Loc: Addison, IL
Reg: 05-28-10
02-11-16 06:10 AM - Post#2608087    
    In response to J REID

I always use a clear gas filter on mine.



 
J REID 
Member
Posts: 693

Loc: SW Minnesota
Reg: 04-09-04
02-11-16 08:13 AM - Post#2608112    
    In response to models916

Mine has the original glass bowl with a replacement paper filter. I sure would hate to change as I just made the fuel line that goes from the pump to the carb. Still wondering where the "sand" is coming from. Tank was cleaned before I started driving it again 3 years ago. Questions, questions, questions

57 210 4dr, 57 2dr ht project, 67 Chevelle SS project, 40 Chev coup project


 
japete92 
"4th Year" Silver Supporting Member
Posts: 938
japete92
Loc: No. Virginia
Reg: 01-18-13
02-11-16 09:01 AM - Post#2608121    
    In response to J REID

  • J REID Said:
Mine has the original glass bowl with a replacement paper filter. I sure would hate to change as I just made the fuel line that goes from the pump to the carb. Still wondering where the "sand" is coming from. Tank was cleaned before I started driving it again 3 years ago. Questions, questions, questions



Could the 'sand' be from the ethanol/gas attacking the paper element?

I would not rule out the tank because it was 'cleaned'. Some time when you get a chance pull it and take a look. 'New' tanks are relatively cheap and are not hard to install.



 
J REID 
Member
Posts: 693

Loc: SW Minnesota
Reg: 04-09-04
02-11-16 11:52 AM - Post#2608141    
    In response to japete92

So far I have been lucky & only had to use about 15 gallons of ethanol since it's been up & running. Definitely going to look into a better filter. Gas tank -- see what happens. Can't keep tearing carb down. Thanks for the insight

57 210 4dr, 57 2dr ht project, 67 Chevelle SS project, 40 Chev coup project


 
4dr 57 
Valued Contributor
Posts: 4500
4dr 57
Loc: Texas Hill Country
Reg: 11-10-04
02-12-16 07:00 PM - Post#2608403    
    In response to J REID


Those always overlooked 5 dollar tin/paper filters that GM used to sell screen out stuff down to 5 or 10 microns. This may help capture your 'sand', don't know.

Stan

It's all good. mostly




 
J REID 
Member
Posts: 693

Loc: SW Minnesota
Reg: 04-09-04
02-12-16 09:26 PM - Post#2608428    
    In response to 4dr 57

I will do some research on whatever I replace it with. Thanks

57 210 4dr, 57 2dr ht project, 67 Chevelle SS project, 40 Chev coup project


 
BluBel 
Forum Newbie
Posts: 47
BluBel
Loc: Chicago Metro NW
Reg: 01-02-15
02-16-16 11:47 AM - Post#2609245    
    In response to J REID

My 55 Rochester two barrel goes dry in about three days. It is because of the round vent in on the top of the air horn. Ethanol evaporates much quicker than pure gas. If it has been more then a three days, I just crank for 10 seconds to fill the bowl. Then I pump the gas once and crank again and it fires almost instantaneously.



 
pyasher 
Forum Newbie
Posts: 28

Loc: Columbus Ohio
Reg: 07-05-14
02-16-16 12:33 PM - Post#2609257    
    In response to Mike_Coyle

  • Mike_Coyle Said:
Thanks Rick,
I think the problem has been coming on slowly. Car restored in 2012. Has only 150 miles since restored. Won 1st. place in trailer restored class in 2012 at Smokey Mountain Classic Chevy Show.



Has the same gas been in the tank since 2012? That could be your problem.



 
LtFrankDrebin 
Super Senior Member
Posts: 5226
LtFrankDrebin
Loc: Coopersburg, PA
Reg: 01-25-01
02-16-16 02:49 PM - Post#2609295    
    In response to J REID

This "fine sand" may be a precipitate from the ethanol evaporating. I noticed a powder in my carbs too, but it isn't gritty.

'56 210 Townsman wagon 6cyl/3spd OD | '58 Impala Sierra Gold 348


 
J REID 
Member
Posts: 693

Loc: SW Minnesota
Reg: 04-09-04
02-17-16 10:51 AM - Post#2609528    
    In response to LtFrankDrebin

So far I am able to use about 95% non ethanol gas so the ethanol part doesn't apply. Maybe the "new" gas evaporates faster? After cleaning carb & assembling bottom I poured gas in to see & with the top open it does go down pretty quick but nothing wet underneath - same as it was before disassembly. Again, my 40 will go a week or more & start right up with the same gas.
Another question, what does the ball under the accelerator pump do? Always thought it was a check valve but shining a light in hole it appears to be plugged.
Thanks again for all thoughts

57 210 4dr, 57 2dr ht project, 67 Chevelle SS project, 40 Chev coup project


 
LtFrankDrebin 
Super Senior Member
Posts: 5226
LtFrankDrebin
Loc: Coopersburg, PA
Reg: 01-25-01
02-17-16 07:22 PM - Post#2609644    
    In response to J REID

I think some rebuilders put that ball in there not knowing that it's not needed.

'56 210 Townsman wagon 6cyl/3spd OD | '58 Impala Sierra Gold 348


 
J REID 
Member
Posts: 693

Loc: SW Minnesota
Reg: 04-09-04
02-17-16 09:46 PM - Post#2609673    
    In response to LtFrankDrebin

It even shows it in the schematic

57 210 4dr, 57 2dr ht project, 67 Chevelle SS project, 40 Chev coup project


 
deedeedodge 
Platinum Supporting member
Posts: 23
deedeedodge
Loc: Colorado
Reg: 01-14-11
02-18-16 07:21 PM - Post#2609836    
    In response to Mike_Coyle

The best way I've found to avoid taking numerous Excedrin Migraine pills is to first and foremost get a new gas tank for every restoration I've started. When you use the cars original gas tank, you now own a piece every old gas station with cracked and dirty gas holding tanks where moisture has seeped in, that it filled up at over the years. Your gas tank and gas lines are the life line and arteries to the cars engine, its heart.

Each time my car starts, it's like the first time. You smile, were off to the next Car Show or Swap Meet. Life is Good!


 
LtFrankDrebin 
Super Senior Member
Posts: 5226
LtFrankDrebin
Loc: Coopersburg, PA
Reg: 01-25-01
02-19-16 07:05 AM - Post#2609934    
    In response to J REID

That ball is only needed when there is a pump intake passage drilled into the casting. On the upstroke of the pump, fuel is pulled in through this passage, but the downstroke forces the ball against its seat, preventing fuel from being pumped back out the intake. I believe the six cylinder's carb used this ball, however, I just rebuilt a two barrel 2GC and it did not use the ball. It got its fuel from above the pump.

'56 210 Townsman wagon 6cyl/3spd OD | '58 Impala Sierra Gold 348


 
49_Purple 
Contributor
Posts: 142
49_Purple
Loc: Krydor, Sask. Canada
Reg: 08-21-15
02-19-16 08:45 AM - Post#2609954    
    In response to LtFrankDrebin

...not sure what all types of fuel you guys got down there, but true the gas today is crap compared to the good old red leaded stuff we ran on when these cars were new. I only use premium. Regular has a shelf life of only 60 days, and will cause problems of all kinds if left sitting in the tank especially over winter storage. Throwing in a can of Sea Foam when driving is good too as it helps clean the sysytem.

58 Impala Sport Coupe 348 tripower
58 Impala Convertible 348 tripower
58 Sedan Delivery
68 Impala 9 pass wagon original
49 Chev 5window ,diesel
82 Corvette


 
J REID 
Member
Posts: 693

Loc: SW Minnesota
Reg: 04-09-04
02-19-16 12:20 PM - Post#2609981    
    In response to LtFrankDrebin

That's how I always thought it worked too but actually looked at it this time. It is sitting now with about 1/2" of gas in bowl but none in the pump hole. Something is wrong here. How does the gas get into the pump? I have been rebuilding carburetors for myself for 50 years but feel kind of stupid right now.

57 210 4dr, 57 2dr ht project, 67 Chevelle SS project, 40 Chev coup project


 
49_Purple 
Contributor
Posts: 142
49_Purple
Loc: Krydor, Sask. Canada
Reg: 08-21-15
02-19-16 04:27 PM - Post#2610016    
    In response to J REID

...quote : The idea behind the checkball is that when you push down on the accelerator pump, the fuel moves to the main discharge and not back to where it came from, the float bowl. Carburetors that use a checkball will usually have a hole in the bottom of the pump well for the check ball, then another hole somewhere on the side close to the bottom of the well wall. When there is only one hole, then it has to be the delivery route to the main discharge and would not use a checkball.


58 Impala Sport Coupe 348 tripower
58 Impala Convertible 348 tripower
58 Sedan Delivery
68 Impala 9 pass wagon original
49 Chev 5window ,diesel
82 Corvette


 
LtFrankDrebin 
Super Senior Member
Posts: 5226
LtFrankDrebin
Loc: Coopersburg, PA
Reg: 01-25-01
02-20-16 09:04 AM - Post#2610165    
    In response to J REID

Fuel for the accelerator pump enters the well through the slot. During normal engine operation, there is more than 1/2" of fuel in the bowl; a sufficient amount of fuel to enter the pump well through that slot.

'56 210 Townsman wagon 6cyl/3spd OD | '58 Impala Sierra Gold 348


 
J REID 
Member
Posts: 693

Loc: SW Minnesota
Reg: 04-09-04
02-20-16 04:43 PM - Post#2610257    
    In response to LtFrankDrebin

That's what I was thinking after looking at it for a while. That means the pump has to come above the slot to let the fuel in & explains why it will run with a shot of starting fluid but not start by itself because not enough gas to get over the slot. Thanks again for enlightening me

57 210 4dr, 57 2dr ht project, 67 Chevelle SS project, 40 Chev coup project


 

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