Eric280zx
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Everything posted by Eric280zx
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Hey, I apologize for my lack of response. I was unaware of the second page feature and thought you guys gave up on me for my basic understanding of this issue I'm having. Anyway, I believe I might've skipped the step of having the engine centered at number 1 but is that just having the correct firing order? Also, are the injectors supposed to spray when cranking it? Could it be a fuel pump relay, a fuse?
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So i replaced the fuel pump check valve and fuel pressure was still going down so I replaced the whole pump and fuel pressure was going down just a tiny bit at a time. Probably like 3 seconds to drop 1psi. The CSV checked out to be okay after all and only fires when engine is cold. Injectors aren't leaking. The pressure regulator seems to be working too because when I start it without the hose on it, fuel doesn't come out. So could anything else cause it to flood? For tomrrow, I will do the shot gun method and clean all the corrosion, make sure all the grounds and connections are good, see battery connections, and all the electrical stuff. Thanks Dave WM, I wish I was as knowledgeable as you so I could fix this problem asap
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Very detailed information, thank! So right now I checked fuel pressure and at prime it's at 40psi and starting is 38psi but when I release the key the psi slowly go back down and doesn't stay like Dave said it should. No fuel is spraying, all seven injections didn't drip, so up next is the fuel pump check valve that could be bad. Where is it located, I'm going to replace this part and see if it maintains the 36psi and not just drop
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The engine ran for 5 seconds the very first crank by simply adding starter fluid (engine was completely dry) so once this happened I did some things to the fuel, spark, and compression to all be good but it seems like every time I crank it afterwords, it floods and spark plugs get wet and the possibly faulty or misinformed CSV is just pouring gas making its way through the timing chain, crankcase, and oil pan. I have not checked the fuel pressure since I am already getting too much fuel and didn't think it'd be a problem but if it can help determine the problem I can definitely do it. Where is the fuse from the battery to the EFI?
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I've cleaned the fuel tank, added a new fuel filter, cleaned rail, and injectors. Then I put 5 gallons of regular gasoline. Then every time I crank it, spark plugs get wet with fuel. With the test I did, none of the injectors sprayed just the csv. Other forums say it should've only sprayed for 2-12 seconds, could my thermotime switch be bad?
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okay so, I disconnected the starter and when I started it, none of the injectors sprayed but the csv ( cold start injector) did and it sprayed for over 15 seconds and it would've easily kept going. Is it supposed to do that or is that what's my problem? Could be the temp sensor misguiding the csv
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So I primed the engine and I can hear the presssure regulator working and no leaks on all seven. My outside temperature is 73 degrees and when I cranked it the only one that sprayed was the cold start valve ( cold start injector). I'm going to do it without he starter, I didn't read that till now
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I have the fuel rail removed right now with everything else connected and I'm going to switch the key just so it starts priming, got the idea from Dave WM. I'll observe if gas is leaking out, should I expect very little or none at all? If it's an obvious leak I'll tap it in hopes that it stops.
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So I did everything with still no luck. I did check the oil and I noticed it's wayyy over the high level and it smells like gas. I took a quart of oil out and it's more of a liquid substance now with a smell of gas. I think my problem is a leaking fuel Injector. What do you guys think? If so, is it the injector or harness?
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If it will help to determine the problem, i am also missing two fuses on the interior panel of the car, it is # 7 and #8 and haven't determined what they are for. I still have to clean any corroded wires, sensor plugs, check for air leaks with the EFI, check the coolant sensor, and check fuel pressure. I'll post up my results after doing all this
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What do you mean by the FSM? I have not checked the FSM on the l28e to check for fuel pressure but I thought it was getting enough fluid since it wasn't starting on starter fluid That is a really good idea, I'll do that! Injectors work for sure because when I cleaned them, I grounded them to a 12v battery and power and attached them to a pressurized hose with injector cleaner and they made the clicking noise and sprayed straight i have not sprayed them with the wiring harness though so I could give it a try injector insulation as like the bushing that go around it and on the head when you put Injectors in thank you!
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Hello guys! I'm new to this forum and recently new to the datsun world I purchased a 1981 280zx datsun that has been sitting outside a barn for about 4-6 years and since it still had the engine I decided to see if I can get it running before I even consider swapping the same l28e or if I get lucky the l28et. The first things I did was: change the oil, replace the fuel filter flush tank and replace gasoline (regular) replaced battery with terminals flush and replace coolant, spark plug wires (all in correct firing order) change ngk spark plugs (gaped .42 and added oil in each cylinder for lubrication) I cranked it with no luck, I heard the oil pump running loudly but decided to use starter fluid. Once started fluid was sprayed and the engine was cranked and the engine started and was running on starter fluid so my next steps were: clean injectors clean fuel rail replace o rings and insulation I cranked it again without starter fluid and it only cranked but didnt start. So I did a compression test and numbers were 140, 145, 145, 140,145, 155 so compression is pretty good being that 180psi is like new. I removed the fuel return line and cranked the engine and gasoline came rushing out, I tested the spark and its a blue with white tint, engine sounds like it wants to start so timing is good (?), exhaust smells like gasoline and has pulses, and it still doesnt want to start. Each time i remove the spark plugs after attempting to start it, i can see a little wetness on the tip and it smells like gas. It started once with starter fluid but now it just doesnt want to even with it. What do you guys think can be the problem? thank you!
