DIY gasket and fuel tank clean
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From: TMC on 12 Jul 2010 09:30 "Rob Graham" <rttgraham(a)btinternet.com> wrote in message news:faCdnfBe0LkPSqfRnZ2dnUVZ8nSdnZ2d(a)bt.com... > On 11/07/2010 22:43, Tony Jones wrote: >> In a previous thread I asked about the carb on my 1987 Mazda 626 1.6 LX >> and >> its idle problems. One of the suggestions was to have a look at some of >> the >> carb needles, which involves taking the carb apart. I've already taken >> off >> and replaced the carb a few times, so that bit's easy. >> >> But the original carb gasket had to be chipped off in lumps. I managed >> to >> source some replacements for that, but Mazda UK have no source for the >> gaskets that go between sections of the carb, and if they exist in Japan >> they'll be months. The part number brings up exactly two hits on Google, >> both in Ukraine (and they don't look like they will actually sell me >> anything). I'm guessing finding this kind of thing from 'we import >> Japanese >> parts' suppliers is unlikely? There's nothing even remotely close on >> eBay. >> >> So, if I take this apart, I'm going to need some kind of gasket. My >> options >> seem to be: >> >> >> Instant gasket gloop - I get the impression this is a bad idea for a carb >> seal? >> >> An old cereal box. I've seen that suggested, but really? Maybe that's >> just >> for (eg) a coolant gasket? >> >> Get some gasket material and make my own. Is there any particular type >> of I >> should go for, and any recommendations for how to make a copy? I was >> wondering about smearing the old gasket with white paint/paste, and >> taking >> an imprint onto the new then cutting it out. Or maybe grease it and >> transfer the grease to card to use as a template. Are there any useful >> tricks to this? >> >> >> The new carb/engine gasket is quite thick - maybe 0.75mm - so I doubt >> gasket >> 'paper' would do. I can probably try to micrometer that, but the old >> gasket >> that I actually want to replace is probably deformed into a lump so not >> very >> easy to measure. How fussy is it likely to be on thicknesses? >> >> Any other tips on the best way to replicate this gasket? >> >> >> On a related topic, I suspect the reason for trouble is muck in the fuel >> tank. As the fuel gets lower, I get random power loss more frequently. >> When I added about 10l of fresh fuel (current tank is 4 months old and >> has >> maybe 10-20l in it) it started and drove fine for about 20 miles. After >> about 20 mins parked, it then completely refused to restart... until I >> turned it over about 30 times and then it eventually fired. Since then >> it's been almost fine. So I wondered if the fresh fuel has disturbed the >> muck (more than the usual swishing around on corners). >> >> So should I try to pump out the tank, or should I just let it run until >> it >> cuts out? I'm going to have to change the fuel filter and clean the carb >> anyway. What should I do with the pumped petrol? And then is there any >> way >> to remove the muck in the tank without dismantling it? >> >> Thanks >> Tony > > The age-old method of making a gasket was to get suitable paper/material, > hold it onto one of the parts to be joined, and gently tap round the holes > in that part with something such as a bolt head, or some small blunt > weapon, so as to cut the paper neatly at the right places. Always worked > for me. And, yes, I bet a cereal packet would work just fine. You could > put a smear of Hermetite on it if you wanted. > > I always used gasket paper and a toffee hammer Regards
From: Chris Bartram on 12 Jul 2010 16:21 On 11/07/10 22:43, Tony Jones wrote: > In a previous thread I asked about the carb on my 1987 Mazda 626 1.6 LX and > its idle problems. One of the suggestions was to have a look at some of the > carb needles, which involves taking the carb apart. I've already taken off > and replaced the carb a few times, so that bit's easy. > > But the original carb gasket had to be chipped off in lumps. I managed to > source some replacements for that, but Mazda UK have no source for the > gaskets that go between sections of the carb, and if they exist in Japan > they'll be months. Have you tried a carb specialist like http://www.southerncarbs.co.uk/? Not used them for years, but they were good then.
From: Tunku on 12 Jul 2010 18:31
Harry Bloomfield <harry.m1byt(a)NOSPAM.tiscali.co.uk> wrote in news:mn.5d8b7da7ddb27a75.106911(a)NOSPAM.tiscali.co.uk: > brown paper and cornflake packets I rebuilt an entire GPz 305 engine using this process. A smear of red gasket seal on the cardboard helped too. -- The above post may contain traces of irony |