M.H. Posted May 22, 2020 Share Posted May 22, 2020 Have you used this before? Ridrust https://www.clarkproducts.co.nz/products/cleaning_products/industrial_cleaners Quote Link to comment Share on other sites More sharing options...
tortron Posted May 22, 2020 Share Posted May 22, 2020 It's phosphoric acid Quote Link to comment Share on other sites More sharing options...
Nominal Posted May 22, 2020 Share Posted May 22, 2020 Went shopping today 3 1 Quote Link to comment Share on other sites More sharing options...
Nominal Posted May 22, 2020 Share Posted May 22, 2020 Best solution is not to let your sheet metal get rusty in the first place @tortron Quote Link to comment Share on other sites More sharing options...
tortron Posted May 22, 2020 Share Posted May 22, 2020 Just now, Nominal said: Best solution is not to let your sheet metal get rusty in the first place @tortron This was rusty prior to my birth. The cold rolled I buy gets some saddle wax on it because I have lots Quote Link to comment Share on other sites More sharing options...
Spencer Posted May 22, 2020 Share Posted May 22, 2020 That molasses is just expensive/slow acid. 1 Quote Link to comment Share on other sites More sharing options...
Bling Posted May 22, 2020 Share Posted May 22, 2020 Are you sure where it pitted wasn't tiny bits of rust? Even after a grind down you'd likely have dots below finished surface. I've found that sort of stuff goes for the easy stuff first. I've dunked bits in that are 100% legit in areas and rusty in others. The legit bit doesn't even get touched, but it will eventually work it's way down into the pits a layer of rust at a time. Quote Link to comment Share on other sites More sharing options...
tortron Posted May 22, 2020 Share Posted May 22, 2020 It was under about 8 coats of paint including the factory original. It was 30cm minimum away from any damaged paint (The pitting is where the paint was rubbed off on high points) Everything had been strip disked and wire wheeled. This was as clean and white as metal gets. It seems to have only etched into it where the cloth was touching. Half of it was only wrapped in plastic and though it discoloured the steel there it doesn't appear to have etched it (sanding marks not rounded off like you would see after a light acid wash) Quote Link to comment Share on other sites More sharing options...
Nominal Posted May 22, 2020 Share Posted May 22, 2020 1 minute ago, Spencer said: That molasses is just expensive/slow acid. Tastes better though I bet. 4 Quote Link to comment Share on other sites More sharing options...
tortron Posted May 22, 2020 Share Posted May 22, 2020 3 Quote Link to comment Share on other sites More sharing options...
Beaver Posted May 25, 2020 Share Posted May 25, 2020 Petrol carb motor hard to start when hot....any obvious things to check? My ute generally takes a bit of effort to start when its hot (i.e. stopping during a long drive or whatever) and takes a few goes to get to it catch. Seems to stumble a bit then cleans up quickly and runs fine (well as fine as it normally runs). Also has a slight intermittent miss under load and low rpm. Doubt its related but figured I'd throw that in the mix. Has new leads and plugs in the recent past. Quote Link to comment Share on other sites More sharing options...
tortron Posted May 25, 2020 Share Posted May 25, 2020 Coil could be starting to go, sounds similar to the issue I had with Morrie once 1 Quote Link to comment Share on other sites More sharing options...
M.H. Posted May 25, 2020 Share Posted May 25, 2020 4 Quote Link to comment Share on other sites More sharing options...
Beaver Posted May 25, 2020 Share Posted May 25, 2020 1 hour ago, tortron said: Coil could be starting to go, sounds similar to the issue I had with Morrie once Short of replacing it and seeing if anything changes, is there a way to test? Quote Link to comment Share on other sites More sharing options...
Beaver Posted May 25, 2020 Share Posted May 25, 2020 1 hour ago, 00quattro00 said: Any tips for checking/fixing this? Quote Link to comment Share on other sites More sharing options...
Carsnz123 Posted May 25, 2020 Share Posted May 25, 2020 1 hour ago, Beaver said: Short of replacing it and seeing if anything changes, is there a way to test? Check resistance in primary and secondary windings. They fail due to insulation breaking down. low resistance or very high resistance is bad. 1 hour ago, Beaver said: Any tips for checking/fixing this? If engine stalls or is hard to start pour water over carb and fuel pump to cool them down. If it fixes the problem then your fuel is getting too hot. 2 Quote Link to comment Share on other sites More sharing options...
governorsam Posted May 25, 2020 Share Posted May 25, 2020 Same with coil. Cool it down and see what happens 1 Quote Link to comment Share on other sites More sharing options...
Guest Posted May 25, 2020 Share Posted May 25, 2020 Timing slightly out? Does it need a bit of peddle to get going? Quote Link to comment Share on other sites More sharing options...
Beaver Posted May 25, 2020 Share Posted May 25, 2020 Just now, nzed said: Timing slightly out? Does it need a bit of peddle to get going? Hard to say for sure as I sort of just try everything all at once to get it going but yeh, would say it definitely needs some gas before it will go. That reminds me, I've been meaning to check the timing actually as it's sometimes a bit pingy under heavy load. 1 Quote Link to comment Share on other sites More sharing options...
Guest Posted May 25, 2020 Share Posted May 25, 2020 Id say thats a good clue to your problem. Could be a coil issue as well as breaking down under load is a common ignition fault but also if you are able to fix the timing first it could resolve all your problems or at least the miss may not be as noticeable. 2 Quote Link to comment Share on other sites More sharing options...
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