20 Most Recent 1985 Nissan 300ZX - Page 7 Questions & Answers

company called "turbo technics" in the uk.....

it sounds to me as if, when refuelling, you put gas in right the hilt. and keep filling it up. this is not good practice as it causes more problems then its worth. It could also the purge solenoid not purging the raw vapors from the tank to the atmosphere. i would get that looked at and the unfortunate part is that's a dealer diagnosis. good luck!

To stop this from happening in the future, add fuel stabalizer to fuel tank when you store it. Run your car for 10 minutes before shutting it off. It would also be helpful to fog the engine also before storing. You can get fogging oil at any auto supply store. As for your immediate problem try adding carburator cleaner to gas tank.

Your overflow tank works on suction to return coolant to the radiator. Check the line and nipple ends for any cracking (cracking on the plastic radiator nippl is very commom). The radiator nipple is not under high prrssure like the fluid under the cap (inside the coolant system). It's on the otherside of the cap and will never "stream or gush" coolant (uless you are over heating badly). As the coolant in the radiator cools it creates a vacuum and draws coolant back from the overflow throgh a small hose. You might not see any leaks as coolant heats up and travels to the overflow. It might be a very small leak and you are usaully driving around and drying up before you see it. Even with a very small crack it will only draw in air and not liquid (as liquid is way heavier than air). Also, I've seen where people have taken out (or fallen out) the tube attached to the overflow cap that goes down deep into the overflow tank. That tube should be long enough to almost reach the bottom of the tank. It's hard to know if something is missing if you do not know it was suppose to be there in th first place but it needs to be there.

it is where the lower radiator hose connects to the engine them are fun ones to change torque to 12-15 ft lbs make sure top side mark faces up

check the fuse and relay switch for the instrument cluster,which includes the fuel gauge. if they are okay,and no check engine light comes on,then the float in the gas tank,which gives you your reading,is stuck and needs replaced.

• Check the servo first. Maybe the servo needs to be clean and also make sure that the engine is properly tunedup. Ihave the same problem also but when I replace the servo everything now is working fine.
• If you have questions feel free to reply to this solution.

I’m happy to assist further over the phone at https://www.6ya.com/expert/ramy_d9e7ebea3891f482

I would have the starter tested. I would also check the battery cables.

Change the coolant sensor

Sounds like the problem is in the speedo head itself, in the dash. If fuild was leaking, I don't think the speedometer would work either? Sounds like the gear that turns the number wheels maybe bad or stripped.

For 1985 Nissan/Datsun 300ZX 3.0L FI 6cyl the Fuel Filter is located: Under hood, passenger side, side of strut tower, mounted in fuel line hose.

Hope this help (remember rated this post) TY for using Fixya.

i do not install flash player

the pulse comes off the ECU,, have the computer scanned for error codes...

check the injectore fuse under the hood..

Don't get too concerned yet. Take it to the shop and let them scew in a well know mechanic's gage to make sure that the sensor isn't giving you a bad signal. That would be the first place to check.

Time to go to a parts store and but a new one. and out it on.

around $3500

sounds like your timing belt tensioner isnt tight enough

http://www.300zx-twinturbo.com/cgi-bin/manual.cgi?list=em&dir=&config=&refresh=&direction=forward&scale=0&cycle=off&slide=15&design=default&total=70

look at the bottom most picture. make sure your tensioner is tight enough