You can adjust the trigger points for air on and then spray - you may have it set so the spray control isn't open wide enough. Finish off with coating the underbody floor pans, Try not to get it onto heater surfaces such as exhausts or engine casings.

Rustbuster specialise in providing high-penetration cavity waxes that are excellent for protecting your car against rust. I just purchased a "shutz" gun to undercoat my truck doors and rocker panels, I have the same problem with not enough product coming out of the end of the tube. There, domestic models are not rust proofed extensively as the climate is generally milder and the roads are not treated with corrosive salt in winter.

This is when rust will form, and it can quickly become an issue which will make a car uneconomical to repair. I thought they were going to come with the conventional 360 degree lance but I only got a short normal lance with them, that only sprays in one spot,used alot of it inside any of the cavities on my subframes. If you intend to use bitumen for your undersealing job, ensure you mask off the parts you do not want to be coated as it is very tough/impossible to remove once applied. Certain car brands have gained a reputation for rust, and they’re not necessarily the ones you’d expect.

Though be careful with pressure as the tins go pop much above 90psi and you'd not want to be sprayed with hot oil.The Liqui Molly underseal offers a shield against corrosion by creating a tough, protective film on the underbody.

With a cheese shredder, cut the wax into the turpentine, stir until the wax has dissolved, (takes a long time; you can use very low heat (a warm room) to aid but be careful) and thin with the machine oil to a brushable / sprayable consistency. There is the option for using a professional to rust-proof your van’s underbody, and the cost for this will obviously be higher. Over time the factory finish on the chasis/underside of cars improved and in the early 00’s this technology, later this was also introduced to vans. Credit subject to status, UK residents only, Euro Car Parts Limited acts as a broker and offers finance from PayPal Credit. The shultz guns that run with the tin can containers can't be used at much pressure, and they are syphon rather than pressurised so probably tricky to get anything down a tube.To do the job properly you’ll need to make sure the surface to be painted is clean and that the old, cracked underseal is removed.