Diesel Fuel Injector Block-Off Tool / Cap Fit Chevy GMC 6.6L Duramax LGH, LML

Description: Diesel Fuel Injector Cap / Block-Off Tool for 6.6L Chevrolet/GMC Duramax (LGH, LML) Fitments: Chevrolet/GMC 2011-2016 Duramax 6.6L [ LGH & LML ] sold individually NOTE: This tool will also work on other vehicles with a 16mm fuel line nut. This tool is a "must have" for anyone who works on Cummins common rail fuel systems. When a Cummins common rail engine will not start, the very first thing to check is fuel rail pressure. If the pressure is less than 5,000 PSI, one of the most likely causes is a defective injector that is returning excess fuel back to the tank. A return flow volume test will verify if excessive return flow is the problem. This cap is then used to identify the individual cylinder that is at fault. The injection line is removed for one cylinder at a time and the cap installed on the fuel rail in place of the injection line. When the cylinder with the offending injector is capped, the rail pressure will rise and the truck will start. In some cases it can be highly advantageous to have multiple caps, because several injectors that return slightly too much fuel can have the same effect as a single injector with extremely excessive return flow. To purchase a complete set of block off tools, please see the Cummins section of our Ebay Store.The injector block off tool can also be useful for diagnosing engine knocking sounds that may be attributable to an injector or a single cylinder problem particularly on engines where this capability is not available through the scan tool, or a bi-directional scan tool is not available. At least one of these would also be a great addition to the glovebox kit of every Cummins owner. When an injector malfunctions on a common rail engine damage to a piston or cylinder can occur very rapidly. When a common rail engine begins to misfire and blow excessive white smoke, the owner is highly advised to turn the engine off and call a tow truck to prevent major engine damage from occurring. An alternative would be to temporarily cap the injector for that cylinder for a short period. PAYPAL payments will be accepted ONLY if you provide a CONFIRMED shipping address with PAYPAL. Otherwise your paypal payment will be refused. WE DO NOT SHIP TO UNCONFIRMED ADDRESSES. Buyer agrees to pay $ 0.00 within the 48 continental states where USPS and UPS ground shipment is available. Canada buyer pays $ 20.00 Virginia Island, Guam, and APO/FPO is $ 20.00 Ship Worldwide With eBay Global Shipping Program. Return Policies: Return Is Accepted Within ( 14 ) Days ( Includes Weekends ) From The Date Of Delivery. We Do Not Cover Or Reimbursed Return Shipping Cost. We Will Only Accept Our Products Which Are Unused, Unwrapped Or Never Installed. Must Be Same Brand New Condition As We Shipped. Must Contain RMA ( Return Merchandise Authorization ) From Us.

Price: 16.73 USD

Location: California

End Time: 2025-02-05T20:55:54.000Z

Shipping Cost: 0 USD