|
Sponsored Links (Register now to hide all advertisements) |
|
|
Thread Tools | Display Modes |
07-10-2011, 03:29 PM | #1 |
Senior Member
Join Date: Aug 2010
Location: Walkerton, Ont. Canada
Posts: 623
|
30 Roadster Project-Engine start (UPDATE)RUNNING!!!
As many of you know we rescued another Model A...30 Deluxe Roadster. It sat in a heated garage for 8 years and the person passed away and the widow sold it to us. We have been trying for weeks to get the engine cleaned up and test everything! Today we finally got it started but it runs really rough.
Turned over after giving it a lot of choke but would only really stay running when the spark was fully retarded????????. We timed the vehicle, new plugs,carb,wiring,cutout, oil, ignition switch. All the points gaped and the points set. I believe we have an exhaust leak at the manifold because smoke came out between the exhaust and block when the vehicle ran. Would this cause it to run really rough? Little bit of white smoke out the tail pipe when we got it to stay running. Maybe head gasket issue or just years of sitting? Where do you think we should start next? take off the manifold and check it and also put in new gaskets? The only way we could keep it running if we were putting down the peddle. here are some videos of it running.. Thoughts are welcome... https://www.youtube.com/watch?v=gddWyuZGZfo part 2 https://www.youtube.com/watch?v=XN2lIijudjo Justin. Last edited by bogdonj; 07-12-2011 at 09:05 PM. |
07-10-2011, 03:53 PM | #2 |
Senior Member
Join Date: May 2010
Location: OKC / Tonkawa, Ok.
Posts: 1,977
|
Re: 30 Roadster Project-Engine start
Have you checked for fuel flow? Is the carb clear of debris?
__________________
Oklahoma City Model A Restorers Group. |
Sponsored Links (Register now to hide all advertisements) |
|
07-10-2011, 03:54 PM | #3 |
Member
Join Date: May 2010
Location: Waterloo, IL
Posts: 81
|
Re: 30 Roadster Project-Engine start
I wonder if you have sticky valves in 1 or 2 cylinders. I'd start by pulling the spark plugs and looking in to see if all of the valves are opening and closing. A sticky intake valve is like a giant vacuum leak.
__________________
Doug in Waterloo |
07-10-2011, 06:37 PM | #4 |
Senior Member
Join Date: May 2010
Location: new britain,ct 06052
Posts: 9,390
|
Re: 30 Roadster Project-Engine start
Like the others have said, MMO and ck gas flow. I would ALSO replace the intake/exhaust gaskets and ck the carb gasket. Sounds like it's not firing on all four=valves sticking. If you se a LOT of MMo you're probably going to get some smoke out the tail pipe. Verify also that you're not "losing" water into the cyls. JMO
Paul in CT |
07-10-2011, 07:13 PM | #5 |
Senior Member
|
Re: 30 Roadster Project-Engine start
sounds like sticking valves to me. I have that prob with engines that sit for years
|
07-10-2011, 07:51 PM | #6 |
Senior Member
Join Date: May 2010
Posts: 1,369
|
Re: 30 Roadster Project-Engine start
Sponsored Links (Register now to hide all advertisements)
|
07-10-2011, 10:39 PM | #7 |
Senior Member
Join Date: Aug 2010
Location: Walkerton, Ont. Canada
Posts: 623
|
Re: 30 Roadster Project-Engine start
Thanks for the comments so far.. i'm going to get a compression gauge tomorrow and see what we find.. someone told me to add a little bit of tranny oil (600w) in the gas to help with sticky valves? any truth to this?
|
07-10-2011, 10:57 PM | #8 |
Senior Member
Join Date: May 2010
Location: Mpls, MN
Posts: 27,582
|
Re: 30 Roadster Project-Engine start
It might help, but I'd try a can of SEAFOAM in the gas and another can in the oil.
|
07-11-2011, 08:16 AM | #9 | |
Senior Member
Join Date: Aug 2010
Location: Walkerton, Ont. Canada
Posts: 623
|
Re: 30 Roadster Project-Engine start
Quote:
Justin |
|
07-11-2011, 08:47 AM | #10 |
Senior Member
Join Date: May 2010
Location: Mpls, MN
Posts: 27,582
|
Re: 30 Roadster Project-Engine start
Sometimes the wire between the upper and lower distributor plates will short out when moving the advance lever. If that isn't the reason for the engine stopping, then I'd guess the spark is out of time.
Spark lever at top should be TDC, then when the engine starts you should pull the lever about 1/2 way down it's travel. A high compression head takes a bit less advance. |
07-11-2011, 09:43 AM | #11 | |
Senior Member
Join Date: May 2010
Location: Quincy CA
Posts: 752
|
Re: 30 Roadster Project-Engine start
Quote:
Joe
__________________
1929 Tudor since 1962 Feather River A's |
|
07-11-2011, 09:48 AM | #12 | |
Senior Member
Join Date: May 2010
Location: Mpls, MN
Posts: 27,582
|
Re: 30 Roadster Project-Engine start
Quote:
|
|
07-11-2011, 09:53 AM | #13 |
Senior Member
Join Date: May 2010
Location: Sf bay area
Posts: 1,464
|
Re: 30 Roadster Project-Engine start
try seafoam and MM Oil,,,,,,works wonders!
|
07-11-2011, 11:52 AM | #14 |
Senior Member
Join Date: Apr 2011
Location: Magnolia, TX
Posts: 161
|
Re: 30 Roadster Project-Engine start
There are many on here with MUCH more "A" experience than I but I have LOTS of experience with later motors and that leads me to say I will be surprised if the problem is stuck valves. When the engine is cranking (in your video), the compression sounds pretty darn even to me. Have you done a compression test? I would certainly do that to answer the question of stuck valves. If I had to bet, I'd go for carburetor or ignition... probably carburetor. I'm betting on plugged jet(s).
Let us know what you find. Steve |
07-11-2011, 12:17 PM | #15 |
Senior Member
Join Date: Aug 2010
Location: Walkerton, Ont. Canada
Posts: 623
|
Re: 30 Roadster Project-Engine start
compression test will happen tonight.. I will let you know what I find!
|
07-11-2011, 05:46 PM | #16 |
Senior Member
Join Date: Sep 2010
Location: South Coast NSW Australia
Posts: 2,596
|
Re: 30 Roadster Project-Engine start
Bad spark.
Attach a timing light to coil lead. Bet you see an irregular flash that will correspond to engine missing. |
07-11-2011, 07:21 PM | #17 |
Senior Member
Join Date: Aug 2010
Location: Walkerton, Ont. Canada
Posts: 623
|
Re: 30 Roadster Project-Engine start (UPDATE)
Worked on the Roadster tonight and did a compression test on all 4 of the Cylinders! they were all in the same area and basically sat at 43-45PSI.... now we do have a manifold leak so would this take some PSI away? 40-45psi seems pretty good to me seeing that this engine is pretty old. But you experts will be able to say yes or no.
Also with the plugs out I turned the engine over and made sure all of the valves were coming up and seating properly. No valves had a hard time seating. Did notice the plugs were wet with gas and every piston was moving up and down. Next steps????? New distributor maybe? Justin |
07-11-2011, 07:22 PM | #18 |
Senior Member
Join Date: Aug 2010
Location: Walkerton, Ont. Canada
Posts: 623
|
Re: 30 Roadster Project-Engine start
|
07-11-2011, 07:34 PM | #19 |
Senior Member
Join Date: Apr 2011
Location: Magnolia, TX
Posts: 161
|
Re: 30 Roadster Project-Engine start (UPDATE)
I'm betting that most of your problem is caused by the carburetor. Do an overhaul on it, check the manifold and carb gaskets and I bet your engine runs MUCH better.
Steve |
07-11-2011, 08:01 PM | #20 |
Senior Member
Join Date: Oct 2010
Location: Ellis County, Texas
Posts: 337
|
Re: 30 Roadster Project-Engine start
I would say that the compression seems a little low, but since all cyls. are pretty even you may be ok. Did you check the compression with the carb wide open? If it wasn't wide open during the test that could be the cause of the slightly low readings. A manifold leak should not change the results of the test. You say that you saw a little smoke in the manifold area and that would indicate an exhaust leak. There could very well be a vacum leak on the intake too. May be wise to go ahead and replace the gasket now. You may be able to kill two birds with one stone, fixing both problems with one gasket.
Last edited by John S; 07-11-2011 at 08:17 PM. |
07-11-2011, 08:16 PM | #21 |
Senior Member
Join Date: Mar 2011
Location: Mebane, NC
Posts: 187
|
Re: 30 Roadster Project-Engine start (UPDATE)
I'm no Model A expert but to me that thing sounds like it is running out of gas. I would do some snooping inside that carb.
|
07-11-2011, 10:33 PM | #22 |
Senior Member
Join Date: May 2010
Location: Mpls, MN
Posts: 27,582
|
Re: 30 Roadster Project-Engine start (UPDATE)
I haven't viewed the videos to form an opinion, but a compression test is only one of two checks you need to make. Also connect a vaccum guage because a slow to close valve will give a good compression reading at cranking speed, but won't be closing like it should be doing at engine running speed.
|
Sponsored Links (Register now to hide all advertisements) |
|
07-12-2011, 05:30 AM | #23 |
Senior Member
Join Date: Sep 2010
Location: South Coast NSW Australia
Posts: 2,596
|
Re: 30 Roadster Project-Engine start
|
07-12-2011, 12:17 PM | #24 |
Senior Member
Join Date: May 2010
Location: Lynden, Wa
Posts: 3,550
|
Re: 30 Roadster Project-Engine start (UPDATE)
Is it possible since the car sat so long that the fuel tank has crud in it? Or the Gas absorbed just enough water?
Mike
__________________
1930 TownSedan (Briggs) 1957 Country Sedan |
07-12-2011, 12:29 PM | #25 | |
Senior Member
Join Date: Aug 2010
Location: Walkerton, Ont. Canada
Posts: 623
|
Re: 30 Roadster Project-Engine start (UPDATE)
Quote:
No, this was the first thing we checked when getting it and have put a new cediment bowl on and made sure good gas was in it and good flow to the carb. |
|
07-12-2011, 12:58 PM | #26 |
Senior Member
Join Date: May 2010
Location: Mpls, MN
Posts: 27,582
|
Re: 30 Roadster Project-Engine start (UPDATE)
Sponsored Links (Register now to hide all advertisements)
|
07-12-2011, 09:03 PM | #27 |
Senior Member
Join Date: Aug 2010
Location: Walkerton, Ont. Canada
Posts: 623
|
Re: 30 Roadster Project-Engine start (UPDATE)
::::::::::UPDATE:::::::::::::::
https://www.youtube.com/watch?v=GGGNc72PikY Wrenched in the garage after work today.. bought some sea foam like you guys mentioned and put some in the oil and gas and cranked it over but nothing would happen.....tried to re time the engine and set the points again just to be sure and same results would fire for a split second and quit.... Almost gave up and then I looked at the condenser and joked about changing it with another one and yessss you guys guess it.. I did and SHE fired almost admittedly and ran strong after a minute. Let it run for about 30 mins as you can see in the video. We know we have a manifold leak we got to fix but thought it sounded pretty good so far. Still can't believe it was a condenser??????????? I did notice the rad got really warm and it does seem to drain the water out slow thought the pet cock....tomorrow going to flush it and see what happens. Getting it at least running is a huge accomplishment and we are learning everything.. This is what it's all about!!!!!!!!!!!!!! Last edited by bogdonj; 07-13-2011 at 04:02 PM. |
07-13-2011, 05:56 AM | #28 |
Senior Member
Join Date: Apr 2011
Location: Magnolia, TX
Posts: 161
|
Re: 30 Roadster Project-Engine start (UPDATE)RUNNING!!!
GOODONYA!
Like they say, 90% of carburetor problems are ignition. Steve |
|
|
Sponsored Links (Register now to hide all advertisements) |
|