Fuel Injection
Posts about fuel injection systems and related topics.
748 topics in this forum
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I'm working on getting the old dry-rotted cracked leaky hoses off some fuel injectors. In the past, I've simply cut/pulled/snipped/pried the old hose off the injectors, and while that works, it's always resulted in some scratching to the barbs on the ends of the injectors. The FSM talks about grinding the hoses off and I'd like to give that a try. Problem is, grinding could destroy the small metal ferrules at the base of the hose. So, question is... Anyone have a source for replacement ferrules? Here's a pic of injectors with and without the hose. I used the old standby method to get that hose off (in pieces), and I'm looking for a better option. Before and…
Last reply by Zed Head, -
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1976 Datsun / Nissan Fairlady 2.0 EFI Bought this car a year ago and been steadily working on it. The car came to me running off a fuel canister from the front. It used to run fine off that but obviously I cant drive it round like that. Once I put the pump on the back it didn’t run. And this is where the fun began. Chasing wires, relays, checking fuel pressure etc etc. All done ( for the most part following the EFI Bible ) For the last year I been tapping away at it doing this that etc. Eventually I got it to run and this is where I am now. It starts and runs as long as I keep my foot down a bit on the throttle and have the TPS disconnected and bypassed . Fuel pre…
Last reply by milligan21, -
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I have a '72 240Z with a Rebello engine, TWM EFI/etc, and a '76 fuel tank and pump. But the fuel gauge (not unexpectedly) doesn't show accurate fuel levels. That is the gauge indicates less fuel than actual, and never points higher than about 3/4 with an actual full tank of gas. Short of replacing the gauge with a '76, might there be an electrical component I could install to correct the signal sent from the sender unit to the gauge?
Last reply by SteveJ, -
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I saw this, and it reminded me of quite a few threads here: https://www.hagerty.com/media/advice/piston-slap/piston-slap-too-much-talk-just-for-vapor-lock
Last reply by SteveJ, -
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For those of us with a late 70's 280z folks with Fuel Injection there is a hidden part called the flame arrester. My 77’ came from previous owners with various failed attempts at maintaining said Z. Like mine, there is probably a chance that the Valve Cover Ventilation Hose has been replaced. If so, check to make sure this part is in there and if you replace the hose be sure to remove and insert it into the new hose. It is part #5 from this page of the FSM. Mine did not have this and since it is NLA I came up with this really inexpensive replacement. It is a quick and easy part to substitute with very little effort b…
Last reply by Zed Head, -
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I wanted to see If anyone knew if their was any correlation between these two relays. One is the stock 280z fuel relay as we know it (under drivers side dash) and the other is a Bosch Fuel injecton relay for Porsche-VW. Bosch one is significantly cheaper than stock AND appears to have the same pinout. What are your thoughts?
Last reply by HusseinHolland, -
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My 280Z has had all kinds of botch repairs to the EFI harness. Quite the mess. I want to get rid of the spaghetti look while I'm at it. So, I cut the entire harness at the strut tower, and I'll put in a couple gang plugs to tie the new harness to the original. These two were the patched thermal timer & ECT - based on the other end where I can see the cable numbers, I think they had them reversed. That would help explain the horrible starting & rough running I'm using wiring colors based on Volvo conventions, since that's what I'm familiar with. I'll make a legend to translate from the white numbered harness to the colors used. Us…
Last reply by HusseinHolland, -
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Hi all I was doing some reading and found that a lot of folks have been adding a potentiometer in line with the temp sensor so the efi doesnt keep leaning out the mixture according to temperature. I was reading that the efi runs the most stable with the car at 175 which means keeping the resistor reading at around 300 ohms. If I were to add that and set the 1k resistor to about half, wouldn't that mean it is constantly richening the sensor's reading by 500 ohms? What I'm getting at is my car will run at around 185 idling but 170 on the highway. If I'm looking for the engine to be reading a constant 175, the potentiometer trick would just tell the computer it …
Last reply by chaseincats, -
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Hi Guys, I am able to find cold start valve gasket but I have not been able to find the gasket which goes under this port on the throttle body? Any idea? or do i need make one myself?
Last reply by kickstand80, -
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Hey Friends, where can i get this part located on the throttle body. What is it?
Last reply by MH77280Z, -
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Hi all - This is the product of a few different EFI tuning/tricks threads we've been going through as a forum. I always enjoyed how quickly the car starts up in the winter with the cold start valve so I came up with a way to manually trigger the csv which (pretty much) instantly starts the car regardless of the weather. I created a youtube video for the community here cheers, chase
Last reply by chaseincats, -
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- 279 views
Hi all: I've been under my car off and on for the past couple of years redoing the fuel system. When I disconnected the wiring from the OEM pump, the terminals were covered in what looked like polyester body filler (Bondo), which I had to chisel/sand off. Beneath that were plastic washer-like pieces that appeared to be meant for a cover to snap over after the wiring was connected. I'm thinking that Bondo wasn't factory, lol. What did the factory use for a cover? I looked for some sort of rubber boot, but didn't find anything that looked like it would fit. I could glob on some RTV. But I figured I'd ask here first.
Last reply by siteunseen,
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