Hard to start when hot

[txasylum]

Okay, so I'm finally getting all the bugs worked out of Christine. 74 Super with a newly rebuilt 1600. Initially, to high fuel pressure. Resolved that down to 2.5-3lbs pressure. Carb running too lean. Resolved that with 130 and 60 jets. Today decided to run to the store about 10 miles away. This is the first time I drove it that far since rebuilding the motor. Shopped in the grocery store, came out and had to keep gas pedal floored and crank, crank, crank over and over until it finally fired up.

I had this problem with my last beetle. Sold that and got this one, same problem. Why is it doing this? I never figured it out on the last beetle either.

[AlmostHeavenWV_VW]

The owner's manual says to *slowly* put the pedal to the floor and hold it there to start when hot. Push slowly to prevent the accelerator pump from dumping fuel and flooding the engine.



Personally, my bug fires up without touching the pedal at all when warmed up. Very occasionally, I'll need to do the pedal down thing when hot.

Thread with more detail:
https://www.thesamba.com/vw/forum/viewtopic.php?t=675995&highlight=starting+hot
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1973 Standard Beetle
1600DP AK case
Solex 34PICT3 Carb
Bosch DVDA 205AJ Distributor

[txasylum]

If only it would work according to the manual. 😕

[Starbucket]

If you post a picture of engine compartment someone might spot your problem. Next time it's hot when you try to start it, 1st start cranking then push down on the gas and see if it doesn't start. I think it's the Ethanol in the gas that evaporates the gas in carb but the accelerator pump will still have some gas and start the car. I put a homemade Micarta gasket between two thin paper gaskets under the carb to slow down the heat transfer and I have no problem with hot starts.

[txasylum]

I will have to get a pic but u made a good point abt the gas. There is a place not far from here that sells non-ethanol gas since I’m out of gas. I will drive up there and fill it with non-ethanol and see how that works.

[Zundfolge1432]

The first thing we used to check was points. Too small gap makes for hard start condition. Takes just a second

[andk5591]

I have that on several of my cars. What I suspect is the issue is that the you are turned off long enough for the choke element to cool and it closes, but the engine is still warm enough that it doesn't want choked.

Usually holding to the floor works well and something I always forget to try is to not touch the pedal at all and see what happens. Anybody try that?
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D-Dubya Manx clone - 63 Short pan,1914.
Rosie 65 bug - My mostly stock daily driver.
Woodie 69 VW woodie (Hot VWs 7/12).
"John's car" 64 VW woodie - The first ever
Maxine 61 Cal-look bug - Cindy's daily driver.
Max - 73 standard Beetle hearse project - For sale
66 bug project - Real patina & Suby conversion
There's more, but not keeping them...

[VW_Jimbo]

[lboos]

Float level might be out of adj. causing fuel to drip into the engine and flooding it, if flooded pushing the pedal to the floor would be the way to start it, if you have to do this, to much fuel, adj. the float level. would be my guess.

[AlmostHeavenWV_VW]

[Cusser]

With a stock type carburetor with a choke, I like to press the pedal down once and then leave it alone.

Pedal; nor peddle or petal, as I've seen both incorrect spellings, makes it "a little" more difficult when searching !
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1970 VW (owned since 1972) and 1971 VW Convertible (owned since 1976), second owner of each. The '71 now has the 1835 engine, swapped from the '70. Second owner of each. 1988 Mazda B2200 truck, 1998 Frontier, 2014 Yukon, 2004 Frontier King Cab. All manual transmission except for the Yukon. http://www.thesamba.com/vw/forum/album_page.php?pic_id=335294 http://www.thesamba.com/vw/forum/album_page.php?pic_id=335297

[lboos]

Pedal; nor peddle or petal, as I've seen both incorrect spellings, makes it "a little" more difficult when searching ![/i][/quote]

Pedal; nor peddle or petal...???
I am the worst.

[beetlenut]

Following this thread, I just drove my car somewhere for lunch and got back in it about 45 minutes later. Thinking of this thread I just tried turning the key without touching the pedal and it instantly fired up! I know that hot/warm starts are dependent on how long a time period has elapsed since shut down, and which method you use to start it, so I'm going to try and keep track of this issue.
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scrapyards are for quitters
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[Ricksurfin]

Unless it’s dead cold, I always start cranking without giving it any gas, and if it doesn’t start I slowly increase pedal until it does.

[ashman40]

Another thing you can easily check...
After driving for a while, when you pull in to a parking spot and turn the engine off... quickly run around to the engine and remove the air cleaner. Look down the carb opening and see if there is any fuel flowing from anywhere down into the carb throat. The carb inlet valve should block the flow of any fuel from the pump once the engine is OFF. Flowing fuel could indicate excessive fuel pressure or an incorrectly adjusted float/inlet valve that is allowing the fuel level in the bowl to get too high and fuel overflowing down the carb.
If it is flowing, remove the top of the carb and check the fuel level. Stock Solex carbs should maintain a fuel level 3/4" from the top edge of the bowl. If the level gets higher than this it can flood the engine.

The choke butterfly should be fully open since the engine is warm. If it isn't, you have an adjustment problem.
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AshMan40
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'67 Beetle #1 {project car that never made it to the road }
'75 Beetle 1200LS (RHD Japan model) {junked due to frame rot}
'67 Beetle #2 {2019 project car - Wish me luck!}

[wimkever]

[Scott65Beetle]

I used to have same issue with a stock set up. When I finally switched over to dual carbs never had that issue. I also got rid of mech fuel pump and went electric.No issues at all with this set up,three car all the same works great all the time.

[Zundfolge1432]

[Starbucket]

[ashman40]