1972 mgbgt

[reghog]

I have owned a 72 mgb for about 2 yrs now. Its used most days in summertime and runs well apart from the idle drops if i get stuck in traffic, and will stall eventually.Looking at discussions on this I have seen breather issues and fuel starvation. Ive also realised that i have no charcoal filter...Is this correct on a 72 ? And should the fuel cap be vented . Any thoughts?

[reghog]

Thanks for this, the car is regularly checked and lubed as necessary, though i didnt realise the brake fluid was such a regular change. Re the heatsheild, looks pretty good with aspestose all there.I may just try loosening the filler next time she starts to drop idle, though shame if i have to change my nice chrome cap for this piece of black plastic. Was that the original ? If its not the filler or the heatshield any other ideas. Timming and carbs seem to be nicely set up and plugs nice dry brown colour. compression eaquel on all cylinders at 150.

[reghog]

Hi again, just realised this pic is the oil filler ( as you said )I was more concerned about the fuel cap and venting. Apologies for bad spelling previously, too used to auto spell checker.

[reghog]

I did have the car thoroughly checked when I bought it and parts replaced and upgraded accordingly. But ( and Im no mechanic )Im doing my best to learn and keep on top of any problems. As I use the car regularly the idle drop is a pain. I'll try loosening the filler later and see what happens. Pics of carb area attached though its difficult to get a good shot of the heatshield.
thanks Andy[url]

[reghog]

ok so I have taken the the car out today and left her running to really warm up. As expected shortly after the electric fan cut in, the revs dropped from 9000 to 5000 and a bit lumpy. Opened fuel cap and no change. Then opened oil filler and the revs recovered fairly quickly. I tried this a couple of times to be sure. So looks like I need a new filler cap. I wonder if it will be that easy !
I beieve the heat shield is all original and the air filters have been changed about a year ago. I have also ordered a drivers handbook for a little bedtime reading. Thanks for the advise and help
Andy