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undercar rumble
Posted: Sat May 09, 2015 11:49 am
by rubie
Hi everyone. Rubie is a red 1963 moggie with a 1275 marina lump and marina front discs. She's developed a front end rumble on acceleration in the last couple of weeks and after 55mph. Its getting worse. On inspection i noticed the head gasket is leaking. could that do it? My workshop manual troubleshooter suggests wear between main bearing shells and crankshaft. didn't want to do the head gasket and then have to take it all apart again. any thoughts? Thanks.
Re: undercar rumble
Posted: Sat May 09, 2015 12:24 pm
by bmcecosse
Oil pressure light coming on? A gauge is essential... You're heading is 'undercar rumble' - and then you say front end.... Is the propshaft loose ?
Re: undercar rumble
Posted: Sat May 09, 2015 8:59 pm
by rubie
Thanks Bmcecosse. I'm sorry, I know this sounds like amateur hour. When the rumble first started it sounded like it was in the boot. Taking her out tonight it sounds more around the gearbox area. I didn't think I was going to make it back from work yesterday. She lost power at times and appeared to miss. Tonight she was ok.The propshaft feels ok.
Re: undercar rumble
Posted: Sat May 09, 2015 9:08 pm
by bmcecosse
Check it's not loose wheel nuts.............

Re: undercar rumble
Posted: Sun May 10, 2015 8:23 am
by MarkyB
Sort the head gasket out ASAP, probably the cause and doing the engine no favours if it's leaking.
Re: undercar rumble
Posted: Sun May 10, 2015 11:17 am
by bmcecosse
If it's only a tiny trickle at the edge....don't worry. Is the water level going down? Bubbles in the water? Compression check will tell all.