"ApolloX75" (apeebles)
05/16/2019 at 22:07 • Filed to: None
0
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"ApolloX75" (apeebles)
05/16/2019 at 22:07 • Filed to: None | 0
| 5 |
You ever have a problem disguised as a bigger problem that’s hiding another problem?
Welcome.
I’ve spent the last few days hunting down a vacuum leak that started as a manifold gasket issue; graduated to a vacuum advance leak and has now ascended to the far outer reaches of what-the-f**k-is-going-on town.
So after pulling everything apart and replacing the intake manifold gaskets my idle “searching” disappeared. For about three minutes. Then came back and continued bumping up and down by a hundred or more RPM every few seconds.
Some elimination of components led me to the vacuum advance being the source of the issue at the moment, as unplugging it from manifold vacuum stopped the issue almost completely.
Tomorrow I shall pull out the trusty vacuum gauge and see if my manifold vacuum is stable or the cause of the searching and then eliminate the other vacuum operated systems (brakes and canister, that’s it) from being the cause or not.
Next week my new radiator will show up and I can solve the pesky overheating issue that’s been plaguing me since the Muncie install.
jminer
> ApolloX75
05/17/2019 at 00:37 |
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It’s a little messy, but a can of ether with targeted applications can help you track down a vacuum leak. Spray it on a section at a time and if the idle climbs when you do that, your leak there is there.
It’s an old trick but it usually works. Some guys like to use WD-40 but I prefer plain old starting fluid. It evaporates quickly, won’t destroy plastic/rubber and has a lower flash point than WD-40.
pip bip - choose Corrour
> ApolloX75
05/17/2019 at 08:48 |
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time for an LS swap
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ApolloX75
> jminer
05/17/2019 at 19:36 |
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Heh yeah I use brake cleaner. To each their own I guess. Anyway the leak seems to have disappeared either by voodoo magic or pure luck.
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ApolloX75
> pip bip - choose Corrour
05/17/2019 at 19:37 |
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If I hadn’t spent so much time and effort building the Pontiac up that would have been my go-to route by now.
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jminer
> ApolloX75
05/18/2019 at 00:29 |
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Brake clean evaporates quicker, but eats some rubbers and will strip paint to so you have to be careful with it.