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I work for Kieswetter Demolition Inc. Our float truck is a superliner. It was the guys at Mike's Diesel that told us injectors.

Hi, I am new to this site. At work, we have a 90 superliner with a E9, which seems to be lacking in power. We have had it at our local mack dealer a few times already concerning this issue, and they have tweaked a bunch of little things, they say all that is left to do is redo the fuel system, which is what i thought it was in all along. So just the other day i stopped by a local diesel injection shop, and before he was to the truck he had diagnosed it as injectors just from hearing it run. So anyways, we are looking at doing injectors now, and possibly testing the fuel pump while it is all ripped apart. Any ideas or suggestions would be great. Also is there a really good Mack guy to go to in the Kitchener-Waterloo area that is knowledgeable about these old motors? Thanks Matt