Hello, first off I'd like to introduce myself to you all, I'm Austen Wilcox and I'm 17 years old. Three years ago for my 14th birthday, my parents bought me a 1976 Datsun 280z fixer upper you could definitely call it off of Ebay that was about 5 hours away. Ever since, we've been fixing the car up. I couldn't possibly describe everything that we have done to it because it's been pretty extensive and we finally finished it a couple months ago to the point where it's driveable and is all fixed up you could say. There's lots of things that we have encountered along the way with it. For example, the beginning of last summer the engine blew the head gasket, so my dad just decided we pull the entire engine and tranny and have them both rebuilt (the tranny popped out of reverse at the time) because they were in need of it. After taking the engine to a machine shop, we found out that the engine was a l24 engine with the l28 fuel injection system on it!! As I'm sure you guys are aware, the l24 heads weren't designed this way at all. We could never really figure out why it ran so rough, so that day we figured it out. That's just one of the stupid things that the previous owners have done to the car. I can't even begin to describe some of stupid things that they did, my gosh it's unbelieveable. After a few phone calls, we tracked down a l28 engine with nothing on it, we would just swap the fuel injection system and exhaust maniflold on it that we already had. After two weekends, we got the engine in the car. It started up without any adjusments which was kind of surprising to us but ran very rough. After playing with the timming, it runs a whole lot better. Except when it's cold, it runs very very rich and very rough, and that's something that I'm going to ask later on but one thing at a time I guess. Well anyway I won't ramble on and on about as I could write a whole lot more, so I get to the question. A couple weeks ago of driving it, the throttle started getting stuck at around 1800-2000rpm. I'm always noticing this when I come up to a stop light or basically when ever I stop. I just kick it down and I'm on my way, but I'd like to get this taken care of. For some reason when I'm playing with the throttle in the driveway, it won't get stuck! I'ts only when I'm driving it that it gets stuck, I don't know why. I was wondering if you could give me some tips on what to look for and what might need to be replaced. Anyway, sorry for all the rambling, but I'm sure you guys would like some pictures of it, so here she is without paint.
Here it is in the driveway, you can't tell in the picture but it has an air dam on it.
Another thing that is new is the polished/crome valve cover that my dad bought for me off ebay that really spruces up the engine, again my camera on my phone doesn't do it justice.