GrandPa kid Posted February 13, 2011 Report Share Posted February 13, 2011 ok so im new to ratsun, i have known about this website for a few years now but i just registered a few mins ago. now i drive a 1978 datsun 510. it has an l20b engine. for some reason the engine boggs out when i slightly step on the throttle. ive had the carburetor rebuilt twice and that didnt change anything. a few people have told me that the jets have to be replaced how ever that couldnt be the problem since the carb was rebuilt twice, or theres a leak in a vacuum line. i dont know what may be the problem and i was wondering if anyone here can give me a hand. thank you for your time. if you guys wanna see it i can post a few pics. Quote Link to comment
skunk Posted February 13, 2011 Report Share Posted February 13, 2011 what kind of carb is it? and pics are always nice. and do you trust the people that re built the carb? Quote Link to comment
datzenmike Posted February 13, 2011 Report Share Posted February 13, 2011 With engine off and air filter out of the way, look down inside the carb and pump the gas. What you should see is a strong squirt of gas into the barrel closest to the valve cover. Does it do this? Quote Link to comment
GrandPa kid Posted February 26, 2011 Author Report Share Posted February 26, 2011 sorry i took so long to reply. school, work, and band practice reduces my time to zero. so i checked the carb and i did in fact see the strong squirt of fuel underneath the cover. im not sure but it could be a Hitachi carb. to be honest i dont know but that name rings a bell. i dont trust any mechanic who works on my car other than myself and im not much of a mechanic. here are some pics of the 510 below. here is the datsun with hub caps, i took them off because i dont want them to get stolen and it looks awesome with out them. this one right here has a problem of shaking and random barking. i cant fix this one. Quote Link to comment
GrandPa kid Posted February 26, 2011 Author Report Share Posted February 26, 2011 bump Quote Link to comment
fisch Posted February 26, 2011 Report Share Posted February 26, 2011 Really clean HL510 dude! My brother had the hatch back version in '89, and it was probably the first thing to get me into Datsuns. Can't help you with the bogging down issue as I am not that good under the hood, but i can appreciate a clean car! Quote Link to comment
dimedriver Posted February 27, 2011 Report Share Posted February 27, 2011 Get us a pic of the carb please. Get a good timing light(Caftsman crome dial back) and check the timing. Remember to the disconnect the vacum advance when doing this. Also check where the hose on the vacum advance on the dizzy goes to. Does it goto the carb(port vacum) or the manifold(manifold vacum)? -Dime Quote Link to comment
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