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Check for leaks and give it a good tune up. If it has a check engine light on, go to auto zone and have the codes read free.
I have a 1990 Nissan 240 sx Fastback. I got terrible mileage as well.I assumed I should get at least in the twenty's. I was getting 14 mpg. In my search I noticed that two of the fuel injectors were leaking.I found out that there was a tech service bulletin about this.I thought the cure was new injectors.As I replaced the injectors I found that I couldn't get the rubber seals to stop leaking.As it turned out, the injectors were'nt leaking,the rubber "O" rings were.There are three per injector. Two at the top.One is pushed inside a metal tube called a fuel rail. This metal rail supplys the fuel for the injectors.I bought new "O" rings from NISSAN. I was told that after market "O" rings won't work well.The price wasn't significant (about $10.00). After a few try's I got them all sealed. It wasn't easy...took patience. It stopped leaking and my mileage is between 21 mpg and 25 mpg. .Didn't need the injectors...but I installed them anyway...Bob
What else can I help you with?
What can excessive fluoride consumption cause?
Excessive fluoride consumption can cause dental fluorosis, a condition that leads to discoloration and pitting of the teeth.
Can a headlight stuck in the upward position cause a dead battery in a 1990 Nissan 240SX?
no it cant as, as long as the light isn't on
Ill a 1989 Nissan 240sx ecu work with a 1991 Nissan 240sx?
Yes the ecu will work. First disconnect the battery and connect the new one then reconnect the batter. Start up the 240sx and it should work it not it needs to be diagnoste goggle 1990 240sx ECU CODES FOLLOW THE STEPS AND THAT SHOULD WORK I know cause I'm using a 1992 ECU FROM Nissan Stanza. I was told it's alittle advanced on the horse power side and idle moves quicker.
What could cause excessive oil consumption in a 2000 Hyundai Accent?
First thing to check is the pcv valve.
Does excessive alcohol consumption cause sterss induced acute gastric enteritis?
No, it causes alcohol-induced gastric enteritis.
How many people fit in a 240sx?
four people can fit in a 240sx fastback cause there are only 4 seatbelts
Why won't my Nissan 240sx go into reverse?
If your Nissan 240sx won't go into reverse, it could be due to several issues. Common causes include a low transmission fluid level, a worn-out clutch, or a problem with the transmission linkage. Additionally, if the transmission itself is damaged or there are internal mechanical issues, this could prevent it from engaging reverse. It's advisable to have a mechanic diagnose the problem to determine the exact cause.
What would cause a 1999 Saturn sl1 excessive oil consumption?
Bad oil rings. Do a Murder Mystery Oil Soak on the cylinders
How does alcohol affect equillibrium?
Excessive alcohol consumption within a short period of time can cause BAC to rise which, in turn, reduces equilibrium.
How does the water cycle affect the.?
Water consumption describes the amount of water left on the earth's surface. Excessive use may cause scarcity.
Can bad fuel injector cause excessive gas consumption?
Yes. A sticking fuel injector can allow far too much fuel into a cylinder.
How does water affects water cycle?
Water consumption describes the amount of water left on the earth's surface. Excessive use may cause scarcity.
