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Cat Man
Cat Man, Cat Engine Expert
Category: Medium and Heavy Trucks
Satisfied Customers: 8865
Experience:  I am ASE Master Truck Certified.
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Had a miss and checked exhaust temps with laser temp gun and

Customer Question

Had a miss and checked exhaust temps with laser temp gun and no. 6 was running a lot cooler so changed all 6 injectors and still same problem even with exhaust temp on no. 6 Ran good at first took for spin up road and back and back to same problem. Wondering if possible injector wire broke or week. 2000 2ks cat in international. Thanks
Submitted: 2 years ago.
Category: Medium and Heavy Trucks
Expert:  Cat Man replied 2 years ago.
Hi. Thanks for asking your question and requesting me. I will try and help you out.
Yes I must suspect a harness issue. I have seen this several times over the years. A lot of times when replacing the injector does not stop the miss. I often find a cammlobe failure or intake/exhaust valve not seating. I would check these first. If the valves and cam are OK. I would consider replacing the harness.
Also, it's always a good idea to check fuel pressure as well. Many times I see low fuel pressure cause an engine to miss. The 2KS must maintain a fuel pressure between 70-90 psi at all times.
Please reply back if you need more help or have more questions. I am happy to assist.
Expert:  Cat Man replied 2 years ago.
I just wanted to see how things were going. Please let me know if you need more help. I am happy to assist. If my information was helpful, please leave a good or higher rating so that I receive credit. Thanks!

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