2008 Isuzu Ascender engine knocking

2008 ISUZU ASCENDER

53,000 MILES • 6 CYL • 2WD • AUTOMATIC

RCADENA7

MEMBER
2 POSTS

The engine started knocking which sounds like a tappet. It also started missing and the rpms dropped on idle. This morning it will crank but could not start it.
It is less then two years old, is this possible?

Oct 18, 2010 at 11:26 AM

KHLOW2008

✓ASE Certified Mechanic
41,814 POSTS

Hi RCadena7,

Thank you for the donation.

When the knocking started, did you take note of the temperature gauge reading?

Check the coolant level in radiator.
Check engine oil level.

At bottom of post there is a " First Things To Check " link where you can get some idea what to check when engine could not be started.

Oct 19, 2010 at 9:30 AM

RCADENA7

MEMBER
2 POSTS

Temperature was normal, oil pressure normal, I did stop and check the oil level and it was fine. In the owners manual it said to continue at a slower rate so long as the icon of the engine did not start flashing. I reduced my speed to 30 miles however, engine was fluttering and i though it was going to stop. I raise the speed limit to 40 and drove home.

Oct 19, 2010 at 5:21 PM

KHLOW2008

✓ASE Certified Mechanic
41,814 POSTS

Did you perform the test as outlined in the " First things To Check " link?

You need to determine what is missing causing the non starting, fule, mechanical or ignition fault.

Oct 20, 2010 at 7:14 AM

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.