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About Jdizz07

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    New Member


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  • Occupation
    Construction Manager

My Z Cars

  • Zcars Owned
  • About My Cars
    Owner of many old classics, love for Datsun and Nissan, have a DR30 RS coupe and 280Z
  1. L28 280Z Car engine problems!!!

    Right, Ive decided to take a leap of faith and go the whole hog. Pistons are out, Sump is off, from timing cover is off. The rings seemed fine but there was a small water mark on the bore, and i slightly tired head gasket closest to the timing chain, which cold have suggested water getting through in the amount of time it has been sitting. Could be some of my problem there. Also the big ends are a bit tired so replacing those too. Gives me a good excuse to give the engine a good clean down and spruce up, just hoping it goes back together ok. Guys i need a full engine gasket set. Preferably here in the UK so I dont have to pay import tax and shipping! Also can you guys tell me the difference in L28 whether I need a 240Z/260Z gasket set or a 280ZX gasket set. Mines a 76 and i think im in a bit of a cross over when it comes to parts. Thanks
  2. L28 280Z Car engine problems!!!

    Hey team, Thanks for the replies, after going through what you guys had suggested and finding nothing out of the ordinary, I decided to run a compression test... (shouldve done this way earlier) to find no compression on cylinder one. I took the rocker cover off, the valves seem to move and seat fine. I used the compression testing kit and blew into the spark plug hole with the valves closed and could hear the air down the crank case. That has got to be bad rings right? After deciding to take off the head and inspect further, I found the exhaust manifold in no.1 totally covered with burnt fuel compared to other cylinders, See photo... seems like this has been the problem why she was overfuelling. Does this make sense all of my symptoms? All things going well i will drop the sump this weekend and try pull some pistons out!! Any tips on getting the sump out? I remember the sump in the L20et on my old skyline was a right dog to get out... Also any easy tips on whether the front of the block needs to be removed, water pump etc? thanks in advance JD
  3. Jdizz07

  4. L28 280Z Car engine problems!!!

    Cool, youtube is better..Thanks will check this out over the weekend.
  5. L28 280Z Car engine problems!!!

    Hey guys, managed to get a couple hours in after work tonight, and good news... Shes running. Pretty rough mind you, but I turned up the Idle, and both the cold start valve (21, 47) and thermotime wires (45, 46) were around the wrong way... My fault entirely from replacing the corroded and brittle clips back when I got it months ago. I have attached a photo of the engine bay, anything look unusual??? Trying to up load a video so you can see how rich shes running... pardon the boxes of Stella Artois, its me birthday on Saturday hahaha Again, vacuum hoses off and running better. Unsure... Thanks again guys. Feel back in love with it tonight!!! Cheers JD IMG_6761.MOV
  6. L28 280Z Car engine problems!!!

    I read on the forum that factory at idle was 36PSI (apologies not 32), and I bought a fuel pump that ran at 3 Bar pressure to match. My gauge in line reads that correct. Anyway I'll have a tinker this weekend and get back. Shes slowly gone from running, to running poorly, to sometimes running poorly, to now, not even running over the course of a couple weeks and me not touching it. Frustrating!!! I used to own a 280ZX that was so reliable and always started and ran like a dream, so Im definitely reluctant to go for carbs. Thanks again
  7. L28 280Z Car engine problems!!!

    Thanks for the replies guys. Ill will get around to it this weekend checking again over the sensors and readings. One quick one if you think its super rich, When I replaced the fuel pump I did away with the pressure regulator?? that is connected very close to the fuel pump. See photo attached. I assumed that my new 32PSI fuel pump matched that of factory so wouldnt need it. Do I need to put back in this factory part? Could that be some of my problem? Thanks in advance.
  8. Nissan

  9. Datsun

  10. L28 280Z Car engine problems!!!

    Hi all, I have recently bought a 280Z 1978 in London UK. It was an ex Cali car and from the license plate hadnt been driven since 2007. Ive spent the last couple months trying to get her to run right, however She went from initially running a bit rich/smokey to now not running at all. Ive replaced the fuel pump as the old one was dying on acceleration (Installed a fuel pressure gauge). Ive replaced all normal things, spark plugs, oil, etc. The loom was very corroded so I have replaced the injector plugs with new ones, making sure to keep the right wire numbers/code from the handbook illustration.The AFM has been siliconed shut as in it has been perhaps tinkered with before. However I have diagnostic tested it and all readings read are that of factory. All readings from the ECU are fine. I have a vacuum leak somewhere, as is sometimes runs when all the hoses are off, if i go to reconnect say the breather hose back on to the rocker cover it just dies. Im stumped on that one.Starting to get really frustrated and have even thought of ripping out the F.I and chucking in some old carbs off a 240 or even still, breaking the bank and going with triple webers! Obviously this is not the desired outcome I just want the bloody thing to go!Any help would be great as like everyone here, I want to enjoy her, especially now that summer is here!Thanks JD