jhaungs Posted February 2, 2020 Report Share Posted February 2, 2020 Hi all. I’ve been trying to find a replacement egr valve for my 74’ L18 engine. Only having luck finding replacements for the L20. They look the same, but I assume there is some slight difference that makes them incompatible? Any insight on this? Part number? Advice on where to purchase? the egr passage and valve assy were COMPLETELY clogged. I don’t think it’s possible to rebuild the valve, but I was able to clean out the passage. thanks! Quote Link to comment
Jersey Posted February 2, 2020 Report Share Posted February 2, 2020 L18: 14710-K2501 (manual) 14710-K2511 (auto) Quote Link to comment
jhaungs Posted February 2, 2020 Author Report Share Posted February 2, 2020 Thanks Jersey. Funny enough, I found those numbers online but when I search for it, I’m still not coming up with anything. Do you know if there is another part that is compatible? Quote Link to comment
datzenmike Posted February 2, 2020 Report Share Posted February 2, 2020 The same manual one was used on the '74 L18 in the 710. Early EGRs were '74 and were unique to the L18s. Later L20Bs used an improved valve and probably different for the increased displacements. You may have to remove the small manifold on the side of the intake in order to poke out any carbon. Has to be open. For the EGR itself just clean and wire brush them and make sure the valve will open and close. The metal tube down to the exhaust manifold must also be clear.After '74 Nissan usually had a counter in the engine bay and a light on top of the dash to remind the owner to do this every 30,000 miles or so. Quote Link to comment
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