New engine flooding on startup. With 44 same with 38 now fixed.
Turbo Mini Forums

So. To be clear. Problem seems to be solved for now with a 38 carb on there.
The 44 bought as... Comming from running engine was my mistake not to check it.
Jet does not rise up to the top of the bridge and is stiff into the jet bearing.
O ring is missing from the chocke tube,...


This one is doing my Head in.

Brand New build 040 overbore 1275.
Compresion of 170 lbs/square inch on all 4 ( 170/170/168/170)
Hif44 jet Set Just below the bridge. Did notice the tube where the jet slides up and down in to Set co sits a good 4 mm below the bridge.
296 cam Set at 106°
Electronic ignition.


To start i Set it to tdc (small gap from damper at first tooth and checked piston to)with rockers on cilinder 4 Loose ignition pointing to cilinder 1.
Carb only even 1 turn open.
Tried a bdl and a bbw needle
Checked spark
Checked sequence

The second the key is turned over its flooded.

Very rare it gives e pop Just a split of a second but then i get soaked sparkplugs.
Turned over with sparkplugs out fuel Just spits out the boren. So realy soaked.

Humor me.

Faulty ( brand new) jet?
Faulty jet guide?
Sucking false air somewhere?

Something Else i miss?
Edit. Just thinking i have no ground cable from block to body but never had and since it makes sparkes when holding the sparkplug to the head...

Edited by Rammie2000 on 28th Feb, 2023.

you can do anything if you set your mind to it...
i rather blow it up winning than keep it together losing.

finish date set for project 1... march 2018

Float bowl needle valve not closing. Also is your carb sat at an angle and did your carb come from a mini? If it is sat at an angle but was from an installation where it sat vertical you will need to adjust the float bowl needle valve to compensate.

Own the day

If i keep it upside down and blow on the inlet it close.

Set the floot to aprox 1 mm below body. It sits on a minispares allu inlet.

you can do anything if you set your mind to it...
i rather blow it up winning than keep it together losing.

finish date set for project 1... march 2018

If you have already adjusted this consider you may have gotten it wrong

Own the day

Either the float bowl needle is not sealing or the fuel hose is possibly connected to the wrong point on the carb? What's your fuel pressure at the carb?

Update.
Re checked ignition and tdc. All correct.
Then took off the 44 carb and put on the carb of my 998 wich ran smooth No issues.

Cleaned sparkplug.

Start up. Toon of on the first second. Ran about 1 or 2 seconds. Died.

Not to get it started up Again. Exact the same as with the 44.

Floods imidiatlly.

No fuel hose is on carb inlet. The one Just above the co screw. Like Always. Overflow is open and vent pipe blocked of.

Pressure is good.

you can do anything if you set your mind to it...
i rather blow it up winning than keep it together losing.

finish date set for project 1... march 2018

I suffered a very similar issue to this, was a knackered o ring in the choke assembly, I would check here,
Was a cheap simple fix in the end. But was a head scratcher for a while..

Good look.

Sooooo


Got fed up. Taken some fuel. Poured it into the air intake and brand brand.

Some more fuel brand brand brand and braaaammm away it was. Shut it down. Wait 5 minutes. One tik on the key and starts like its more relyable then hounest jack.

Still dont get it but it runs.

Going to rebuild that 44 and see where it gets me.

Neighbours happy. Noisseeee

you can do anything if you set your mind to it...
i rather blow it up winning than keep it together losing.

finish date set for project 1... march 2018

Sooooo


Got fed up. Taken some fuel. Poured it into the air intake and brand brand.

Some more fuel brand brand brand and braaaammm away it was. Shut it down. Wait 5 minutes. One tik on the key and starts like its more reliable then hounest jack.

Still dont get it but it runs.

Going to rebuild that 44 and see where it gets me.


On the other hand. How much power gain would i see with a 44 over a flowed (Dave vizzard way) 38 carb?


Neighbours happy. Noisseeee

Edited by Rammie2000 on 22nd Feb, 2023.

you can do anything if you set your mind to it...
i rather blow it up winning than keep it together losing.

finish date set for project 1... march 2018

Classicturbo and e5tus.

Ill look into that.

Happy 4 niw that it runs with the 38 but thinck it could benefit from a 44

you can do anything if you set your mind to it...
i rather blow it up winning than keep it together losing.

finish date set for project 1... march 2018

Thnx for the tip. Opend up the 44. The o ring want nackerd. It Just was not there at all.

Hopfully with a full rebuild problem solved

On 22nd Feb, 2023 e5tus said:

On 22nd Feb, 2023 Classicturbo said:
I suffered a very similar issue to this, was a knackered o ring in the choke assembly, I would check here

I've also suffered with this failure, ran so rich even with adjustment fully leaned out

you can do anything if you set your mind to it...
i rather blow it up winning than keep it together losing.

finish date set for project 1... march 2018

quite sikmply as has already been said.

your needle valve is not sealing. Whether installed wrong, damaged, etc etc, or too much fuel pressure.

It's still wrong.

Remove dashpot/piston/needle and turn the fuel pump on and see if fuel is pissing out the jet.
It should not be.

And any plugs that have been drowned with fuel, bin them.

And if you've chucked too much fuel into the cylinders, remove plugs to eject the fuel and you may need to change the oil too as it will have found its way into the sump

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

Needle valve is closing perfect. Tested it and retest. Fuel pump is standard. Its not pissing out of the jet

It starts very wel on the 38 now.

Had a look into the 44 and as above. The o ring seal for the choke wasn't nackerd but simply missing. Making it run over rich.

An other point i found in the 44 is the jet not sliding well in the jet bearing. And keeping it from going all the way up.
Sparkplugs although still firing well were to be replaced anyway. Just need to find where i left the new ones.

Good point on the oil. Just ran it for about 5 minutes yesterday and somewhat 2 minutes today to see if it would pick a cold start without issues. Checking oil it does have some coloring to it and very slight smell.

Edited by Rammie2000 on 23rd Feb, 2023.

you can do anything if you set your mind to it...
i rather blow it up winning than keep it together losing.

finish date set for project 1... march 2018

So. Just to make an end on this
Always Nice to Read a solution instead of problems.

The 44 seemed to be missing a rubber ring on the choke tube. Replaced it.
Also the jet didnt seem to move very wel up and down. ( jet brand New)
Replaced the jet with an old one and rubber ring with a universaliteit one of the correct size and the car firred up straight away.

you can do anything if you set your mind to it...
i rather blow it up winning than keep it together losing.

finish date set for project 1... march 2018