Hi All, With all this talk about pumps and fuel tank stuff, I just wanted to share my experiences of the fuel tank baffle. In my opinion, a properly working original baffle and pickup setup is vastly superior to John's setup (sorry, John) The original setup is awkward to assemble and prone to the pickup hose collapsing due to particles clogging the pickup filter, and the original soft rubber the pickup hose was made from. I believe the particles mostly come from a rusty filler neck and/or from a tank that has been left to sit. Many DeLoreans have been left to stand with fuel in their tanks for some years. Tar-like deposits build up, and when they break down again, having been soaked in fresh fuel, the pickup filter can clog - sometimes months after the car has been put back on the road. The fuel pump makes a groaning noise when the fuel is cavitating in the suction side of the pump - in other words, boiling. It condenses back to a liquid very quickly after being compressed by the pump, but it's not good for the pump and suggests either a kinked hose, a collapsing hose (if original) or a blocked pickup filter. These problems get worse when the fuel is hot, but it's not the pump that's at fault. DMC Texas has inexpensively remanufactured the pickup hose in a stiffer rubber for some time now and as long as the tank is CLEAN, and the baffle assembled correctly with a clean filter, and the return line correctly returning to the baffle, this will work better than any other baffle setup. It is designed to live in the middle of the tank for very good reason, and this is principally why it's a bit of a sod to assemble. The baffle is essentially a "cup" that sits in the centre of the tank, and has a few small holes to let fuel in SLOWLY. The engine uses fuel at a fraction of the rate that the pump moves it. What it doesn't use, gets sent back to the tank, and should drop straight back into the baffle. So the flow into the baffle from the rest of the tank should be restricted to a small amount. Simply mounting a ring shape to the bottom of the tank isn't good enough, as DMC themselves discovered and issued a service update to add a base to the original baffle. This means that under cornering, braking and accelleration, the baffle acts as a "buffer" and allows the fuel to get much lower before causing a problem. It should be obvious that this ideally wants to be in the centre of the tank. I had a customer on the phone once swearing that his automatic transmission was causing his car to cut out. He could reverse it out of his garage, but as soon as he put it in drive, the car would stall. I scratched my head for a bit and then it occurred to me to ask if he had one of John's baffle kits... I then told him to go and put more fuel in his car, and consider reverting back to the original setup which allows the tank to get lower before you need to fill up. My advice: Stick to the original design, and the improved parts available for it. I'm sure the 909 Bosch pump is available in the US - try BMW or Mercedes dealers to start with as it's used as standard on most of them. Martin www.delorean.co.uk ------------------------------------ To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnewsYahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/dmcnews/join (Yahoo! ID required) <*> To change settings via email: mailto:dmcnews-digest@xxxxxxxxxxxxxxx mailto:dmcnews-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/