is the fuel injection system sequential multiport (one injector sprays at a time) or is it simultaneous (all injectors at a time)

Asked by Jan 08, 2007 at 11:48 AM about the 1987 Ford Ranger

Question type: Maintenance & Repair

I have a 2.9 L fuel injected engine and I need to know if all the fuel injectors should spray simultanous or one at a time.  Also am getting gas in my oil.....what could be the problem?

3 Answers


Hi tired! I couldn't find and answer to your injector question here on the web. Take a trip to your local library and have a sit down with your Ranger's Chilton's manual. That will answer your injector question and it may speak to your fuel problem as well. I have to think they may be related. One great way to get your fuel in your oil is to leave unburned fuel in your cylinders. But another source could be an engine-mounted fuel pump (not sure about where the FP is mounted on that vintage Ranger). This is a life-threatening problem however (for the car) and you need to pin the source down quickly. Good luck

ford ranger fuel injector diagram

16 people found this helpful.

A good way to tell if you have port or multi point fuel injection is to see if you have a mass airflow sensor ( 4 wire sensor just after the air filter box ) or a MAP sensor ( manifold absolute pressure, a small black sensor with 3 wires , with a vacume line attached to it from the intake manifold . MAP sensor is port fuel injection , and MAF sensor ( mass airflow sensor) is normally multi point fuel injection. If you are getting gas in the oil , you might have a leaky injector , a bad airflow sensor , bad fuel pressure regulator , or a number of other things . You need to get the vehicle checked over for any trouble codes , tune-up may be required , and /or fuel pressure check . even something like a timing chain "jumping" a cog will throw out the computer and trick it into dumping fuel . You will need to do a complete checkover and make a list of whatever is required before doing any repairs.

1 people found this helpful.

Your Answer


Looking for a Used Ranger in your area?

CarGurus has 4,555 nationwide Ranger listings starting at $1,195.


Ford Ranger Experts

  • #1
  • #2
  • #3
    Bob Beaman
View All

Related Models For Sale

Used Ford F-150
2,339 Great Deals out of 215,874 listings starting at $1,300
Used Chevrolet S-10
9 Great Deals out of 951 listings starting at $950
Used Dodge Dakota
70 Great Deals out of 3,039 listings starting at $1,800
Used Jeep Wrangler
259 Great Deals out of 18,616 listings starting at $2,695
Used GMC Sierra 1500
725 Great Deals out of 59,132 listings starting at $1,995
Used Ford Mustang
247 Great Deals out of 37,118 listings starting at $2,500

Used Cars For Sale

2011 Ford Ranger For Sale
31 Great Deals out of 687 listings starting at $3,488
2010 Ford Ranger For Sale
16 Great Deals out of 368 listings starting at $4,450
2009 Ford Ranger For Sale
7 Great Deals out of 260 listings starting at $3,281
2008 Ford Ranger For Sale
15 Great Deals out of 353 listings starting at $2,095

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.