Why is my cat C7 in cold mode?
Somethings going on when it come out of cold mode. You most likely need a set of injectors. If your high pressure pump was replaced due to failure, then it may have contaminated the injectors. The injector map is in cold mode (rich) until 165 deg.
When does a cat C7 lose its power?
My C7 has plenty of power until the engine temp reaches 150 degrees. Then it experiences the power loss. Runs like a bat out hell until it comes out of cold mode.
What kind of engine does a C7 HEUI have?
C7 HEUI engines were notorious for the hp oil pump bearing and pistons failing and passing metal in the HP Oil system and wiping out injectors and huei pump.
What kind of pump does a C7 engine use?
Just a thought! The early C7 engines were HEUI. They also had the fairly early version of the HEP HEUI pump, and were prone to breaking springs on the delivery valves of the high pressure pump. Your symptoms sound about right for a HEUI pump problem.
What’s the top speed of a cat C7?
Top speed might be 35 – 40 mph. Need to kinda feather the throttle until the engine temp comes up to then it runs fine. See this thread……
How to check a cat C7 loss of acceleration?
The best way to check is to inspect the IPR which in built inside the huei pump, and also pull the big plug on the pack of the cylinder head for the oil rail and catch the oil and inspect for metal and brass. I did not do a lot of them, C7’s but the 3126’s I did from day 1.
What should the coolant temperature be in a Caterpillar C7?
With a 70/30 mixture of antifreeze and water the boiling point increases to 277 F °. Normal operating temperature of a Caterpillar C7 for example is 180-200 F °. Each diesel engine is different but ideally the coolant boiling temperature will increase under pressure. A.)
What should I do if my cat C7 loses power?
It should bring up a code, loss of power, diagnostic usually starts, low boost, test the CAC, low fuel pressure, change the filters and be sure they are on properly, and the right ones, and proper pressure. The air system filter plugged, or exhaust. Turbo seized or malfunctioning, Valve set to tight.
Why does cat not have a C7 engine?
We were told today that the reason Cat does not have any parts for the C7 is they sold that line to a manufacture in Minnesota. Now after 3 weeks of giving us the run around they have the owners of the C7 engine line sending a compatible turbo…
When did Caterpillar stop making the C7 warrenty?
CAT & Freightliner are known to use any excuse not to honor the C7 warrenty since they stopped making highway rated motors 3 years ago.
When did the Caterpillar C7 diesel engine come out?
The Caterpillar C7 Engine was supposed to be the “golden child” in Caterpillar diesel engine lineup; one that combined raw horsepower with computer controlled clean emissions. However, sometimes things don’t go according to plan. The engine was produced from 2003 to 2009 and was installed primarily in over the road medium duty class 8 trucks.