poor running

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Kevin Brinkerhoff
Posts: 14
Joined: Fri Jul 30, 2004 6:33 am

poor running

Post by Kevin Brinkerhoff » Sat Apr 09, 2005 10:34 am

Terry, sounds like your car is sick! please don't think that I am presumptuous about what youv'e done already to it , but are you sure the firing order is correct? Do you have a shop manual ? Are all of you cylinders firing? Are the valves going up and down like they should? Compression? Since carburation is dependant on other things its the last thing to check. Did it ever run right? The good news is that the carbs are less complicated than a flush toilet and are easy to adjust if all else is right. Call me if you like 231 275 5222 Kevin Brinkerhoff ( owner and restorer of many things British !) [Non-text portions of this message have been removed]

Terry Horlick
Posts: 23
Joined: Wed Dec 15, 2004 8:22 pm

Re: poor running

Post by Terry Horlick » Sat Apr 09, 2005 1:16 pm

> Terry, sounds like your car is sick!
are you sure the firing order is correct? Absolutely, the engine would just barely run if the order was off. Do you have a shop manual ? Yes Are all of you cylinders firing? Yes Are the valves going up and down like they should? Yes, and they are adjusted properly. Compression? Good and equal on all 4 Did it ever run right? Not since I purchased it about 6 months ago. It is timed to static TDC. It is running a 17.5 degree plate. Spraying oil about the intake manifold doesn't effect the engine at all. I don't have fittings to put a fuel pressure gauge on there (yet) so I don't know if the pressure is low. I just rebuilt the pump and it ticks well and runs strongly. I haven't cupped my hand in front of the air intakes yet as I just got that intake on there and am a bit burnt out on fiddling there. Terry TC2285

Liz Harris
Posts: 27
Joined: Sun Mar 13, 2005 3:29 pm

Re: poor running

Post by Liz Harris » Sat Apr 09, 2005 2:36 pm

Hi Terry, from what you say I would put my money on fuel starvation. You say you`ve only had the car about 6 months...do you know if it was laid up for a time before this with an empty tank maybe...then sucked up a bit of rust. Try disconnecting the fuel suction pipe at the pump and if you have access to an air line, give a couple of short blasts back to the tank.....if you do try this make sure the filler cap is at least unclipped otherwise you might just end up wearing a shot of petrol when the pressure releases back up the pipe, also leave it for a good couple of hours to let any sediment re-settle in the tank. A friend of mine put his + 8 Morgan back together and the tank had been stored with no cap on...he had similar problems to the one`s you`re having........and the problem...........a moth....... I should imagine you`re up for trying anything right now, good luck.....Tweed TC 2259 Terry Horlick thorlick@sbcglobal.net> wrote:
> Terry, sounds like your car is sick!
are you sure the firing order is correct? Absolutely, the engine would just barely run if the order was off. Do you have a shop manual ? Yes Are all of you cylinders firing? Yes Are the valves going up and down like they should? Yes, and they are adjusted properly. Compression? Good and equal on all 4 Did it ever run right? Not since I purchased it about 6 months ago. It is timed to static TDC. It is running a 17.5 degree plate. Spraying oil about the intake manifold doesn't effect the engine at all. I don't have fittings to put a fuel pressure gauge on there (yet) so I don't know if the pressure is low. I just rebuilt the pump and it ticks well and runs strongly. I haven't cupped my hand in front of the air intakes yet as I just got that intake on there and am a bit burnt out on fiddling there. Terry TC2285 Yahoo! Groups Links Send instant messages to your online friends http://uk.messenger.yahoo.com [Non-text portions of this message have been removed]

Paroor
Posts: 62
Joined: Wed Mar 30, 2005 10:06 pm

AW: [mg-tabc] Re: poor running

Post by Paroor » Sun Apr 10, 2005 11:25 am

Hi Terry, I support Liz Harris. I asked you about the SU pump. You are quite sure about that the SU pump is working well. But if the fuel tank is rusty, there may be fuel starvation. Tank lid had to have a breather hole. Before cleaning the fuel tank, take a bottle of petrol and feed it straight to the carburettor and watch for difference in performance. We all want to help you. But how ? Madhu -----Urspr ngliche Nachricht----- Von: Liz Harris [mailto:lizandtweed@yahoo.co.uk] Gesendet: Samstag, 9. April 2005 23:36 Hi Terry, from what you say I would put my money on fuel starvation. You say you`ve only had the car about 6 months...do you know if it was laid up for a time before this with an empty tank maybe...then sucked up a bit of rust. Try disconnecting the fuel suction pipe at the pump and if you have access to an air line, give a couple of short blasts back to the tank.....if you do try this make sure the filler cap is at least unclipped otherwise you might just end up wearing a shot of petrol when the pressure releases back up the pipe, also leave it for a good couple of hours to let any sediment re-settle in the tank. A friend of mine put his + 8 Morgan back together and the tank had been stored with no cap on...he had similar problems to the one`s you`re having........and the problem...........a moth....... I should imagine you`re up for trying anything right now, good luck.....Tweed TC 2259 Terry Horlick thorlick@sbcglobal.net> wrote:

Mike Duvall
Posts: 11
Joined: Sun Jan 23, 2005 9:03 am

poor running

Post by Mike Duvall » Mon Apr 11, 2005 12:41 pm

Terry, A couple of ideas. Are you sure your firing order is correct? Also, I have for years backfiring when I let off the accel, idle was terrible. I could never find a vacume leak and then I discovered there is a small "button" that you can push up underneath the carb that will lift the piston ever so slightly. It had come out of the carb causing the leak. Mike

Keith N Black
Posts: 4
Joined: Sun Jan 09, 2005 8:54 am

Re: Poor Running

Post by Keith N Black » Tue Apr 12, 2005 4:07 am

Terry Once dark, start the car with the bonnet open and pay attention to the distributor cap and the coil base. Look for blue arcs from either. An MGA bout drove me batty with a cracked coil base before I finally discovered the problem......................Keith [Non-text portions of this message have been removed]

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