CA problems!!

Discuss topics related to the CA18DE and CA18DET series engines.
Doogz
Posts: 667
Joined: Thu Mar 13, 2003 5:58 am
Car: '89 240sx coupe

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I tried to fire up the CA today and here is what happened. It cranks but i couldn't hear the walbro pump (which i figured i should be able to) So i took off the fuel lines and im getting no gas. I took off the harness (6 pin harness with only 5 wires used) in the trunk going to the fuel pump and tested the wires and this is what i got:Top left (all black wire)= i get no reading at allBottom left= pin that is not in useMiddle top (black wire w/ red stripe)=12VMiddle bottom (green wire w/ blue stripe)=7.6VTop right (black w/ yellow stripe)=no reading at allBottom right (all black)=ground

So i have 5 wires to the fuel pump and only 3 in use...also, im not sure if this makes any difference or not but my gas gauge is not reading anymore. Any help with the fuel problem???

Also...after all of this...i was cleaing up the tools and i notice oil dripping from my downpipe (was all i had hooked up at the time) so it looks like i'll need a replacement turbo. I just need something cheap that'll drop right in and last for a little while. Finally, can the turbo be replaced w/o engine removal?


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slw240sx
Posts: 3303
Joined: Thu Aug 08, 2002 9:39 pm
Car: 1990 Ca18det 240sx Hatch

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make sure the oil return line is on tight at the pan and turbo! that maybe your leak, and the fuel pump make sure you wired it up right! i dont know how mines wired but i got this big stick looking thing for a relay to it

Doogz
Posts: 667
Joined: Thu Mar 13, 2003 5:58 am
Car: '89 240sx coupe

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I doubt it is the return line as it is actually coming from inside the downpipe not just leaking around it, but i'll check it anyway. Just in case though...know where i could get a cheap turbo :)

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Nismo1182
Posts: 1697
Joined: Thu Oct 24, 2002 6:51 am
Car: Z06

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I had the same problem when i dropped a dohc ka into my friends 89 hatch. It turned out to be a loose ground connection by the injectors. Make sure everything is connected.

Doogz
Posts: 667
Joined: Thu Mar 13, 2003 5:58 am
Car: '89 240sx coupe

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Since we are talking about everything being connected...I've got a couple things that are NOT connected and no clue as to what they do. Up by the battery i have a 2 wire harness that is not connected, its not the starter one..those wires as thick as shat and these are like 18 gauge or 20 but i can't get to my car today so i can't say what the colors are. Also on the drivers side, up by the relays there was like 3 harnesses that hooked up and traveled up front and across the car and there seems to be no place or need for them to be hooked up now. Any ideas as to what these things are and they could they be my problem because i won't be able to test them today. I don't get to work on the car today as my friend locked his damned keys in the shop and we won't be able to get into it until im already at work. :(


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