BritishV8 Forum

General Category => Engine, Transmission, & Rear Axle assy. => Topic started by: 88v8 on June 16, 2023, 06:27:44 AM

Title: Removing ethanol residue
Post by: 88v8 on June 16, 2023, 06:27:44 AM
So, my car was seven months in a shop having the auto box rebuilt... should have been about 3 weeks but that's another story.

Came back on a trailer, would hardly start, won't run at idle, misfiring.

Ignition all OK, but the carb has blue crystals and slime, haven't got into the pressure reg and the fuel tank and piping yet.

When the car went in, everything was clean, it ran perfectly. I suspect it was left out over the winter, I know they burned up 7 gallons of E5 playing around, and then I guess they put a couple gallons of E10 in it. No additive, no Stabil. I never use E10.

So now I have to strip the carb, the reg, and clean everything.

What's the best way? Carb cleaner? Don't have compressed air other than a duster.

And the tank... don't want to have to drop it. Drain, squirt carb cleaner in the top?

Any experience?

Ivor

Ps I didn't pay their last bill.
Title: Re: Removing ethanol residue
Post by: turbodave on June 16, 2023, 07:18:11 AM
If you are stripping it down, you can't go much wrong in purchasing a can of berrymans to leave the items to soak.  This stuff is great. Isn't crazy aggressive that it works in seconds, but put the components in the can and leave it soaking overnight, and they come out looking crazy clean.

https://www.berrymanproducts.com/products/eco-friendly-products/berryman-chem-dip-carburetor-and-parts-cleaner/
Title: Re: Removing ethanol residue
Post by: 88v8 on June 17, 2023, 10:08:44 AM
Thankyou.
I see I can get that over here. It looks good for the carb, clean all those little fuel passages, and if it saves dropping the fuel tank it will be worth the cost.

And I could put the pressure reg in there, and the piping and the fuel pickup.

Ivor
Title: Re: Removing ethanol residue
Post by: BlownMGB-V8 on June 17, 2023, 03:23:34 PM
That's very effective stuff. Also extremely stinky, you will want to keep it out in the shed and even then maybe hang it under the eves outside. Nothing that loud could possibly be good for you.

Interestingly enough, the same people make the best tire sealant I've ever found. It really works. (Also it isn't stinky.)

Jim
Title: Re: Removing ethanol residue
Post by: Blown v8 on June 19, 2023, 11:48:59 AM
Could you use "Berrymens" in an ultrasonic cleaner ?
Title: Re: Removing ethanol residue
Post by: BlownMGB-V8 on June 21, 2023, 07:48:12 AM
Oh my. You had better smell it before you start thinking about that.
I have an old can of it, when I was using it I would open it just long enough to put the parts in, seal it back up, and put it outside. The stuff is really loud. Haven't opened it back up in many years.

Jim
Title: Re: Removing ethanol residue
Post by: turbodave on June 21, 2023, 04:03:42 PM
They must've changed the formula; The one I've got (2 years ago ish) has a bit of a smell, but it doesn't "stick" to you like the solvent i used to use in my parts washer.  I could literally lift the lid on my parts wash for 2 seconds, and stunk for the rest of the day.
Title: Re: Removing ethanol residue
Post by: ag1234 on June 24, 2023, 11:45:01 AM
Even in Ca., I was able to buy " caburetor dip", by the gallon. A better value, if you can get it.
                                                                                                                    Art.
Title: Re: Removing ethanol residue
Post by: 88v8 on July 01, 2023, 05:30:36 AM
Pretty effective stuff.

Here's one side of the carb with blocked jets

(https://hosting.photobucket.com/images/bb76/88v8/edelbrock_etc_022.JPG) (https://hosting.photobucket.com/images/bb76/88v8/edelbrock_etc_022.JPG)

I stripped the carb and put all the contaminated bits in the cleaner, and poured some into
 the body as I didn't want to dip the exterior.

(https://hosting.photobucket.com/images/bb76/88v8/edelbrock_etc_027.JPG) (https://hosting.photobucket.com/images/bb76/88v8/edelbrock_etc_027.JPG)

After just 40 mins it came out almost clean

(https://hosting.photobucket.com/images/bb76/88v8/edelbrock_etc_028.JPG) (https://hosting.photobucket.com/images/bb76/88v8/edelbrock_etc_028.JPG)

I also poured half a gallon into the fuel tank, left it an hour, then drained it and flushed
with some old petrol.

After reassembly, and replacing the fuel filters and cleaning the pressure reg, it fired up,
 ran fast a few seconds and cut out and wouldn't restart.

Then next day having recovered a degree of temper, I tried again. Or rather, I wanted
to check the cranking voltage at the coil so I turned it over, no choke, no fuel as the
pump was switched off, and blow me down it started instantly and idled in a wobbly
fashion, so I switched on the fuel pump and it ran fine. Got it hot, static hot that is,
set the idle with vac gauge.

The really weird thing is that previously it wouldn't run when cold without choke, now
it idles fine with virtually none;
One change I made before startup was to advance the timing a little. It's now at
6 degrees static which is the standard setting. When first unleaded fuel arrived
years ago, the received wisdom was that one had better back off the timing so it was
somewhere around 3 static.
It sounds very crisp now, and the change in cold starting... surely that can't be
down to the change in timing....

Anyway, not complaining.

One other thing I notice, I changed the fuel filters, the primary (plastic) filter that
had been there for many years was full of flakes from the previous rusted tank,
which it had caught very well despite someone (who might have been me) fitting
it the wrong way round.

Ivor
Title: Re: Removing ethanol residue
Post by: Spitfire 350 on July 01, 2023, 07:54:42 AM
Nice job, thanks for the photos. Maybe some fuel passages got cleaned out and are now supplying enough fuel for the cold idle.
Title: Re: Removing ethanol residue
Post by: MGBV8 on July 01, 2023, 11:13:33 AM
Got to feel great about those results, Ivor!