0
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
Wiki User
∙ 8y ago
Add your answer:
Earn +20 pts
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 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.
What would cause a 1999 Saturn sl1 excessive oil consumption?
Bad oil rings. Do a Murder Mystery Oil Soak on the cylinders
How many people fit in a 240sx?
four people can fit in a 240sx fastback cause there are only 4 seatbelts
How does water affects water cycle?
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.
What is the cause of excessive blow by?
cause of excessive blow- by
Will papaya cause heat?
Yes, Papaya does cause Body Heat. Excessive consumption of papaya will boost the internal heat, which you can not measure but can sense through some symptoms.
