Why is my Hemi knocking?
Why is my Hemi knocking?
Low quality fuel can cause the hemi tick. Fuels that contain high amounts of ethanol or that are low octane may not properly lubricate the fuel injectors and can lead to a slight tapping or ticking noise. Low-octane gas has also been known to cause an ignition knock in high-performance engines.
How long do Hemi engines last?
5.7 Hemi engines are good for 250-300 000 miles and more if properly cared for and regular maintenance is carried out. Early models suffered from valve seat issues which was rectified after 2008. It’s not uncommon to find high mileage 5.7 Hemi trucks running around today.
Why is my Dodge Ram 1500 running rough?
Lean Misfire. Another common reason and typically missed diagnosis for a rough running engine is the lean misfire. In this case, the engine is receiving too much air and not enough fuel. This is most noticeable while the engine is resting at idle since this is when an engine typically requires more fuel to operate smoothly.
Are there any problems with the Dodge Hemi engine?
Also, engines are subject to potential problems that we won’t cover. Earlier HEMI engines are getting old and a lot of problems become fair game on old, high mileage engines. That said, let’s move onto the problems we outlined above. Spoiler – this can sometimes tie into the other common problems.
Why does my Dodge Ram misfire at idle?
This is most noticeable while the engine is resting at idle since this is when an engine typically requires more fuel to operate smoothly. The lean misfire condition is likely to disappear at highway speeds due to the more efficient flow into the combustion chambers.
What causes a 5.7 Hemi engine to misfire?
Usually misfires can be caused by other faults, like lifter roller failures. As such, it’s more of a symptom than a problem in those cases. Nonetheless, standard maintenance items can cause misfires, too. Our big focus here are the 5.7L HEMI spark plugs.
What causes rough idle on Dodge Ram 5.7 Hemi?
I have been struggling with an issue that seems to be pretty common for the 5.7 Hemi. When starting the truck, it starts by dropping rpms, and then rising, and then dropping again. It almost sounds like it has some kind of race cam, lol. The idle might smooth out for a minute or too but then gets really rough again.
Also, engines are subject to potential problems that we won’t cover. Earlier HEMI engines are getting old and a lot of problems become fair game on old, high mileage engines. That said, let’s move onto the problems we outlined above. Spoiler – this can sometimes tie into the other common problems.
When to start a Dodge Ram 5.7 Hemi?
Discussion in ‘ Engine & Performance ‘ started by FancyStancy, Oct 21, 2013 . I have been struggling with an issue that seems to be pretty common for the 5.7 Hemi. When starting the truck, it starts by dropping rpms, and then rising, and then dropping again.
Why does my Dodge Hemi engine keep ticking?
This seems to be the most common and serious cause of the Chrysler 345 HEMI engine ticking problem. It also appears most common on 2009+ models leading some to believe the multi-displacement system is to blame. It does make sense.
