Pressureangle Posted July 12, 2021 Share Posted July 12, 2021 Asked NAPA for a case of carb cleaner, they came back with about 8 cans of 'Mac's' carb cleaner. Who cares, right? So I'm working on the '89 Mille GT. Had the sump off, tried to clean it with Mac's. No go- simply doesn't cut oil and light, if old, mung. Bleah. Go to the carbs last night, been sitting some time so plenty of varnish. Put all the bits in a cup and make a puddle of Mac's. Doesn't touch the varnish or deposits. Bleah. Then, suddenly, right before my eyes, I watch the o-rings and inlet valve tips expand and disintegrate. Oh, happy day- carb cleaner that doesn't clean anything and destroys carburetor parts in less than 30 seconds. Inlet valve assemblies are $25 each. Just a 'beware'. Don't try to save a penny or a minute using this crap. I returned all of it, not that they cared at all. 2 1 2 Link to comment Share on other sites More sharing options...
po18guy Posted July 12, 2021 Share Posted July 12, 2021 Pretty easy to make something that goes after only the soft targets. So, Stoddard solvent and a parts brush? Link to comment Share on other sites More sharing options...
Pressureangle Posted July 12, 2021 Author Share Posted July 12, 2021 23 minutes ago, po18guy said: Pretty easy to make something that goes after only the soft targets. So, Stoddard solvent and a parts brush? Yeah, I think from now on I'm just going to use MEK and Acetone after I investigate their tolerance by viton. It's not as convenient but I know it works. I'll use Gumout or CRC for places I have to spray. Link to comment Share on other sites More sharing options...
po18guy Posted July 12, 2021 Share Posted July 12, 2021 The aging human organism is not the only thing that doesn't work like it used to. 2 1 Link to comment Share on other sites More sharing options...
Gmc28 Posted July 12, 2021 Share Posted July 12, 2021 Hmm. I’ve got a gallon of that in the shop, awaiting my flat slide carb from my old-ish DR350. 1 Link to comment Share on other sites More sharing options...
Lucky Phil Posted July 12, 2021 Share Posted July 12, 2021 After recently rebuilding 3 throttle body sets I use one of these. I've 2 one large 20Litre one and a small one for, well small stuff. Forget the toxic spray and soak junk these work perfectly esp for things like throttle bodies. https://www.amazon.com.au/Ultrasonic-Cleaner-Digital-Durable-Stainless/dp/B08R73QMYR/ref=asc_df_B08R73QMYR/?tag=googleshopdsk-22&linkCode=df0&hvadid=463522662873&hvpos=&hvnetw=g&hvrand=803062948571161468&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9071372&hvtargid=pla-1161471464591&psc=1 Here's what a 25 year old second hand covered in grunge throttle body looks like after 30min in the ultrasonic tank. Plus all the internal passages are clean as well. Ciao 2 2 Link to comment Share on other sites More sharing options...
Gmc28 Posted July 12, 2021 Share Posted July 12, 2021 Phil, what did you use as the medium/liquid? I picked up one of these this winter, but haven’t used it yet. Was thinking the flat slide would be a good candidate. Link to comment Share on other sites More sharing options...
Scud Posted July 12, 2021 Share Posted July 12, 2021 Sorry you had that experience, but thanks for the heads up. I typically trust NAPA, but will avoid that product and stick with Gumout or CRC. +1 on Phil's recommendation for an ultrasonic cleaner. I have a small one and have used it with Simple Green, CLR, Purple Power, and diesel fuel. For small parts, put the solvent and part in a plastic bag, then fill the ultrasound with water an immerse the bag in the water. 2 Link to comment Share on other sites More sharing options...
80CX100 Posted July 12, 2021 Share Posted July 12, 2021 Some of those solvents are nasty crap, I've seen a few expensive plastic things vanish before my eyes, lol. There was recently a post on WG re Deoxit being toxic to the inner soft rubber sealing membrane of the water proof electrical connectors. I noticed that myself when I worked through the electrical harness on my V11 with Deoxit/Vaseline, membrane turned all mushy/puffy. The cheapskate in me, has kept me from getting an ultrasonic cleaner, but I like that idea of the parts in a sealed bag w solution in a tank full of water, that makes a lot of sense! and sounds much easier to manage. 1 Link to comment Share on other sites More sharing options...
Lucky Phil Posted July 12, 2021 Share Posted July 12, 2021 41 minutes ago, Gmc28 said: Phil, what did you use as the medium/liquid? I picked up one of these this winter, but haven’t used it yet. Was thinking the flat slide would be a good candidate. A little bit of simple green or C18 truck wash. you dont need much around 3% is enough. I used petrol with some injector cleaner to clean the injectors in my small jewellery ultrasonic bath. I also had it connected up to a 6volt battery supply to hold the injector open while it was cleaning. It was such a dodgy thing to do (outside in the full open air I might add) I stood by with a fire extinguisher the whole time. I was thinking as it was working that this is the sort of practice that ends up on the nightly news. I'm making a home made safe injector cleaner now. Ciao 4 1 Link to comment Share on other sites More sharing options...
bbolesaz Posted July 13, 2021 Share Posted July 13, 2021 I like Berryman B-12 Chem Tool. 1 Link to comment Share on other sites More sharing options...
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