Thanks for the link, great pictures!

Hi all,

I am writing to you today from a secure unit, the Wardens are very nice, they allowed me to write using a soft crayon.

OBVIOUSLY, the reason I am currently serving a long sentence for mass murder a spot of arson, pillage and plunder, is because I still have not sorted out my 'rich running' problem.

Despite compleatly rebuilding the carb using a repair kit (including new needle valve and seat), setting the float to the correct height, new coil, plugs, HT leads, set the timing and checking the points, its still blowing out black smoke and a strong petrol smell when cold mostly.

The situation has changed slightly since the above work though, it now seems to mostly only do this from cold and it seems to take a while for one or more cylnders to start firing, once these do fire, the problem seems to go away.

I checked the compression on each cylinder and they are all good with very little difference between them. All plugs are firing, at least to the plug top.

Assuming everything is good in the carb, electrical and compression department, what causes (presumably) some cylinders not to fire (due to flooding or other reason) and the excess or unburnt fuel to be exiting through the exhaust?

Thanks Guys, and chance of an Apple Pie and file?

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Obviously it was a compliment to you Guscha!

Indeed the quiet cat gets the cream, and very nice it is too!

Hi Guscha,

Gut zu sehen, dass Du dem deutschem Vorurteil entsprichst
von Genauigkeit und Praezision!

Yes, Guscha, you are of course right, but I don't think
the average viewer is really up to speed on Packard models or year of production.

Alternatively, Mr. Smith was a time traveller!

Pat

Hi,

My Packard featured recently in an Irish television series about American presidential candidates.

The candidate is question here is Alfred E Smith.

Slan.

Pat.

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Hi Guys,

Sorry for the delay in getting back to you.

Before I caught up with the latest posts, I initiated 'Operation Overkill' and replaced all HT leads, coil, filters, dis. cap and rotor (no condenser as there is an electronic pick-up under the cap). I also dismantled the carb, cleaning it and in particular,inspecting the float and needle valve.

While the carb was apart and the fuel pump running, I held the float up, thus closing the needle valve. It appeared to work satisfactory in stopping the fuel flow.

(NOTE, I AM USING A ZENITH 28ADA10 CARB, IT HAS GIVEN ME NO PROBLEMS TO DATE WHILE THE EE22 IS BEING REPAIRED)

I re-assembled everything and hit the start button, it seemed to run fine at first, even adjusting the Idle Mixture screws were now affecting the motor (previously, adjusting these had NO effect on the running of the motor. As I think was mentioned in a previous post, there was presumably excess fuel being fed in apart from just the idle mixture, resulting in the motor running rich.

Anyway, the rich running started again, with black smoke and a strong smell of fuel coming from the car. Further, I saw fuel leaking from around the top carb gasket, I can only think that it was FULL of fuel.

I can only assume, that as you have all stated previously, that it must be a float/ needle valve issue, even though these seem in perfect condition. I am attempting to get a repair/service kit for the 28ADA10 carb, which will hopefully include a needle valve and seat.

Of course, that big question is how did this problem occur so suddenly!

More anon....

Thanks for your answer, see 'Im Rich' to see why I am asking!

Hi all,

Firstly, thank you all for you replies. I hope I have dealt with your suggestions below;

1.The motor is running at normal temperature, the thermostat seems to be working ok..
2.The coke is not closing of its own accord any stage except when used (manual choke)
3.I have used hotter plugs, to no avail.
4.The problem started very suddenly, really strong smell of fuel from exhaust at first. I had many problem-free miles on the car beforehand.
5.The plugs condition was perfect, prior to this problem. They are recommended number plug.
6.There is an electric pump and pressure regulator fitted (awaiting rebuild of original carb), but this setup ran perfectly pre-problem.
7.The rich running seems irrespective of how cold or hot the car is.
8.The motor was serviced not long before the problem started (c.50 miles or so), tappets were adjusted and probably the timing looked at. The motor in the car at present is a 12 Series, the original motor is currently out of the car waiting rebuilding, the guy who serviced the in-car motor serviced it as an 11 Series, not a 12 Series, not sure if this is an issue?
9.The carb is a replacement for the original one (an EE22?), like some other motor parts, it was beyond repair, but it ran the motor perfectly on the new one. It is about 2 years old, supplied by Max Merritt. Twin barrel and the float is a twin float (attached to each other on top where it also operates the needle valve.
10.To reiterate, the motor ran fine for many thousand miles, prior to this sudden problem.

A few thoughts,

1.Can the carb float's 'go out of adjustment', or the needle valve start sticking for no apparent reason?
2.There are two mixture screws on the carb, I am told they rich/lean the mixture and screwing them in leans the mixture. In this case, they seem to achieve nothing (in regards leaning the mixture) except to cause rough running.
3.What carb conditions would cause sudden riching?
4.What timing/ignition/coil/tappet conditions ditto?
5.The fuel pressure regulator (which has performed flawlessly so far), is adjustable in ? pound increments, any ideas of the normal PSI feed for this motor (considering it's not the original carb, I will attempt to find out the name of it out of interest).

From reading your comments, my feeling it is that it rests with overfilling of the carb bowl, for whatever reason. This would account for the very rapid onset of the problem and the lack of success in trying to lean the mixture with the adjustment screws?

Thanks!

Hi,

Probably a simplistic question but....are the tappet adjustments for a 11 series motor the same as a 12 series motor?

Hi Guys,

HELP, before I pull out the few strands of hair I have left,PLEASE!

My motor is running way too rich, plugs sooting up, black smoke from the exhause, petrol smell etc.

Have adjusted/checked everything I can think of mixture, plugs, points, coil and looked for leaks, all seems ok.

All 8 plugs are fouling equally.

A few other questions to confirm what little I know...a leak on the intake side will cause lean running as against rich, ditto a leak on the vacuum side?

Sl?n!