Mass air flow to motor

1995 INFINITI J30

265,000 MILES • 0.5L • 6 CYL • AUTOMATIC

MONTYNMERRI SIMPSON LIFERS

MEMBER
1 POST

The car turns over but coughs in a sense, like possible air leak. No compression. upon digging around a bit I found the the boot/hose that goes into the motor has cracks long enough to allow air. also there is another small outlet going to the motor from the same side (drivers) which is loose and actually came completely out. As opposed to the other side no cracks and the smaller tube is fixed and does not move.

Mar 4, 2019 at 8:42 AM

JACOBANDNICKOLAS

✓ASE Certified Mechanic
110,193 POSTS

Hi and thanks for using 2CarPros.

If you have a cracked hose, it should be repaired. Yes, a vacuum leak will cause driveability issues. If the check engine light is staying on with the engine running, have the computer scanned for diagnostic trouble codes which may tell you exactly the problem.

Here is a quick video that shows how to scan an computer:

https://youtu.be/b2IJGfImVvw

I realize most people don't own a scanner, but most parts stores will do for free.

Next is a link that shows how to check for a vacuum leak.

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

See if this helps or if you have other questions.

Take care,
Joe

Mar 4, 2019 at 7:51 PM

Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.