Help Me !!
This is the emergency HELP ME forum for those of you that are having troubles with your Z-Car and need immediate help.
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- 4 followers
- 12 replies
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Very metallic and rapid clang/clang noise under load is coming from underneath below console maybe closer to passenger side. Goes away when you back off. Much more prevalent when cold and almost goes away when warmed up even under load. Changed rear diff mount, diff fluid and trans fluid. Only one Zcar mechanic in area and he has no clue. Last resort is to remove trans to look for a loose bolt but he's not too confident that is that problem. This is a fairly powerful 240Z with a 280 block, header, cam, flow work on E31 head. Sound just seemed to start for no apparent reason and seemed worse after mount changed and fluid changed but diminishes with driving so maybe recent …
Last reply by Patcon, -
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- 2 followers
- 4 replies
- 837 views
Did a compression test on the 3.0L/280Z based engine in my 240Z. #1 = 195, #2 = 165, #3 = 170, #4 = 185, #5 = 150, #6 = 175. Want to do a leakdown test to see what's going on in #5. Have a leakdown tester which I've used on vintage motorcycles. Have looked on YouTube and searched the forums, for a leakdown test procedure to use on an L28. For each cylinder, need to test at TDC on compression; how do I determine that for each individual cylinder? Thanks.
Last reply by Reptoid Overlords, -
- 4 followers
- 43 replies
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I’ve been troubleshooting and searching online to figure out my tachometer problems since I installed the ZX distributor with the E12-80 ignition module. My problem is I don’t get any tac readings below 1200 rpm. Doing my research I’ve seen many other with this problem but the links have died on some of these posts so I’m only getting one page of most of these threads. So today I bought a new condenser and connected it to the negative side of the coil, because my old one broke. I’m not sure what the uF rating is but is didn’t help the problem. The stock ignition module on passenger side is completely disconnected. I pulled the tach resistor off the harness l…
Last reply by SteveJ, -
- 3 followers
- 2 replies
- 735 views
This is probably a stupid question, but I cant figure out what some of the hardware that came with the adjustable Konis are for. Specifically the metal sleeves and the plastic washer. I'm thinking that the metal sleeve is to be used as a spacer for the strut, and I was wondering if i could use that to gain suspension travel?
Last reply by ckurtz2, -
- 4 followers
- 20 replies
- 2.6k views
Moving this over from the "strange intake noise" thread since that's solved. My friend's 1975 280 is having a strange problem where it stumbles every time you hit the gas. We installed an air fuel gauge and when you hit the gas it will go into 'off the chart lean' numbers and then stumble up to catch it. Once it's in a high enough rev range it's responsive, but getting it into the 2.5-3k range is difficult to say the least (see video below). It's also worth noting that it idles fantastically, but it's literally just when you hit the accelerator that the jetronic EFI doesn't throw enough gas at the engine to keep up. The only way to get it to run well(i…
Last reply by chaseincats, -
- 3 followers
- 56 replies
- 3.5k views
My Z runs horrible and I’m unable to locate my timing marks when the #1 piston is at TDC. Have a 1970 240Z 5speed, with 139K (engine rebuild at 134K). Performance modifications: Fujitsubo Legalis R Exhaust and Trust GReddy JDM Exhaust Headers. PO installed a Mallory dual point distributor, which I changed to Pertronix version 1. During the ignition change I found the timing before at 1-2 degrees ATDC with points and 20 degrees BTDC after Pertronix install. I’m sure that change had something to do with the electronic pickup. I was unable to retard the timing much due to adjustment limitations on the distributor, so I adjusted the timing by drivability an…
Last reply by ZNate, -
- 3 followers
- 55 replies
- 3.6k views
Hi guys, My friend's 75 280 has always made this strange hissing from the intake: https://youtu.be/mjrzNhHvXL4. Any ideas what this could be? We took off the cone filter and when we did we could hear it from the afm, so we took off the afm, and could hear it through the throttlebody, when we took off the throttlebody the sound stopped (kept the engine running by pulling the temp sensor cable and left the tps switch in to run rich enough for it to not die). We've checked multiple times for vacuum leaks using both a smoker and a can of starter fluid on the manifold and there are no leaks. We also tried 2 other throttlebodies and both make that noise. I've …
Last reply by chaseincats, -
- 1 follower
- 0 replies
- 491 views
I'm winding down on this years work on my 75 280Z and my one job is installing new gauges in the dashboard, and I'm looking for recommendations for a shop in PA or NJ around the PHILA metro area 40-50 miles either side of the Delaware river. Thank you,
Last reply by Killain, -
- 3 followers
- 5 replies
- 1.3k views
Greetings all, I have a series one 240z with a L28 with 240z head and carbs. I did install the Petronix Series II electronic ignition. It seems to want to stop power past 5K and I get an occasional exhaust backfire. I am thinking I need to recheck the timing,, as I have been running it at 10 degree before TDC. Have not done the valves for a bit, so was thinking of checking that too. I did just check the carbs for float level and sync them. If I keep the rpm done, it seems to run fine, which is fine for general driving. But it's just not right at higher rpms Any other suggestions would be greatly appreciated
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Last reply by jpc3006, -
123 Ignition 1 2
by joe newsom- 3 followers
- 15 replies
- 3.8k views
Hello Everyone, I am looking for some help with some where to set my 123ignition centrifugal curve and MAP curves. I have a 280zx block with N42 head that has upgraded cam. I am running Z Therapy Carbs. i was hoping to get some number that are a good starting point.
Last reply by Gav240z, -
- 3 followers
- 6 replies
- 950 views
Started my '71 240z this morning for a drive. While idling noticed the oil pressure gauge was sitting on zero. Shut it down, checked oil level (good). Started again and removed the oil filler cap, looks like lots of oil being slung around. Maybe the sender has failed, maybe the wiring, maybe the gauge. What's the next troubleshooting step?
Last reply by Patcon, -
- 1 follower
- 10 replies
- 1.5k views
Driving my '71 240z in the hills today. Leaving the scenic outlook, decided to chirp the tires a little. Something went BANG loudly in the rear end. Coasted to a stop, did a visual inspection, nothing found. Continued driving, but the loud BANG started happening again and more frequently, only when I was on the gas, not when coasting. Parked it again, no visuals again. Called the tow truck, now back home. Put rear up on jack stands. In neutral, rotated the tires forward at same time, while friend grabbed the drive shaft. Some times the shaft would turn in sync with the wheels, other times it seemed to skip or jump. Asking the experts in the group fo…
Last reply by kenward1000,
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