21 reactions · 3 comments | Common rail 5.9 injector weep hole leak. We can check most all Common rail injector out there. Dodge 5.9 & 6.7, Ford 6.4 & 6.7, GM 6.6 Duramax. Also we can check most all of the Ag & Industrial common rail injectors. Call 417-866-2220 for your application. | Northeast Diesel Service of Springfield | Facebook

A Fuel Rail Pressure Relief Valve is a fairly simple part that can cause a host of problems on common rail diesel engines. If it’s time to replace you have two options; a stock replacement which will bleed off pressure at a predetermined amount, or a “race plug” which doesn’t. Typically, those running performance parts like a tuner, lift pump, larger injectors, etc. will opt for the plug. This means you: 2003 – Current 5.9L / 6.7L Cummins, 2001- Current 6.6L Duramax’s, and 2011 – Current 6.7L Po