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In this Discussion
- IrishPackard December 2008
- Ol racer December 2008
- Oldcar_Mechanic January 2009
'34 Club Sedan help needed.
-
Hi all,
Great to see such a busy forum, feeling very alone here in Ireland, not to many Packards around these parts!
I have a problem I need help with. I have totally rebuilt the motor in my '34 Club Sedan, spending loads of money and time on it. Yesterday while out driving I noticed a lot of blue smoke when I drove off from traffic lights. I pulled out the spark plugs and found the back 4 badly oiled up. The front 4 are perfect. I have not checked compression, there are around 500 miles on the new engine (new pistons, rings, valves, etc, etc) but I dont think 4 cyclinders would be worn out or break rings together at once. The ignition is electronic, all 8 plugs share the same power source.
Before I go insane can anyone give me any ideas as to why the rear 4 are oiling up...................please!
Pat Feeney,
Galway,
Ireland. -
Welcome to the forum Pat.
Not trying to be a wise guy, but are you sure that they are oil fouling?
It is a single coil system?
You may also want to try the Packard guys on the AACA board.
Ron -
Hi there and thank you for your reply.
It runs on a single point (electronic) 8 lobe cam so the same system supplies the spark to the 8 plugs. Could oil be sucked up through one of the vacuum pipes atteched to the side of the inlet manifold? Oil is also coming out of the manifold inlet drain when the motor is switched off.
Pat -
I appologize that I do not know what you mean when you say the "manifold inlet valve". I have worked on 34 Packards before but can not recollect what it looks like.
I imagine that the possibility of sucking oil from someplace is possible as long as the line is going to something that is connected to someplace that has to do with oil.
How much oil is the vehicle useing?
Have you done a cylinder leak-down check?
Sorry I can not be more of a help.
Ron -
I am not familiar with the Packard flathead motor either but I would take a compression test just to rule out a broken ring theory (doubtful) or rings just not seated yet. If the valve guides were worn but not replaced oil could seep past the stems.
I would also persue the possibility of vacume sucking oil into the last 4 cyls from an outside source.
Apparently its not bad enough to foul the sparkplugs..... -
Hi all,
Well it seems to be sorted.
Oil was being sucked up through the vacuum pipe from the petrol pump. I disconnected the pump and blocked off the vacuum pipe leading to the inlet manifold. I plumbed in a electric pump and went for a 50 mile drive.
The results were very interesting indeed!
The car went better than ever, cruising along at 65 mph, including uphill with 3 people on board. No smoke whatsoever and the plugs were a perfect colour.
I can only assume the original pump was not only leaking oil into the inlet manifold but it was not supplying enough petrol for good motor performance. Serendipity at work!
Thank you for your help guys, roll on my next project, changing the pivot bolts in the leaf springs!
Pat.b -
Thanks for the update.
Glad you got it going good.
Ron
