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04dodge
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04dodge

04dodge

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my son has an 01 auto,air dog 150, dragon fire v44 pump,quadzilla. put air dog and v44 pump was running good for about a month now no power sounds like it is missing, fuel presure is 15 psi , cracked lines seem to be getting fuel at injectors,very little boost. 0237 and 1693 came up on codes. put new map sensor and intake gasket did not seem to help at all.any suggestions?

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Mopar1973Man

Mopar1973Man

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Actual there is a Quadzilla problem... The Quadzilla has a full boost fooler so it impossible to have a MAP sensor code really. So it was me I would un-hook the Quadzilla and see if the Quadzilla is the cause...

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Mopar1973Man

Mopar1973Man

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Well there is 2 types of turbos... HY35 (Automatics) and HX35 (5 and 6 speed trans.)The HX35 turbo has a small piece of rubber hose going from a fitting on the compressor side ot the wastegate motor underneath the turbo. The HY35 has a solid metal tube that you can't access... But regardless if you pressurize the hose or the entire system the wastegate should move to the open postiion (rod movement towards the rear of the truck). This rod can be seen under the truck very easy.

04dodge

04dodge

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loosened waste gate blew air in at 25 psi did not see any movement. running like it has a bad miss. I am thinking injector(s) has 252000 don't know if any thing was ever done. was a fleet truck oil and regular maintenance. Thought about trying old injector pump see if that helps. Is there a way to test injectors in the truck

guesswho512

guesswho512

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i'm copying this straight from the FSM:WARNING: THE INJECTION PUMP SUPPLIES HIGHPRESSUREFUEL OF UP TO APPROXIMATELY120,000 kPa (17,400 psi) TO EACH INDIVIDUALINJECTOR THROUGH HIGH-PRESSURE LINES. FUELUNDER THIS AMOUNT OF PRESSURE CAN PENETRATESKIN AND CAUSE PERSONAL INJURY. WEARSAFETY GOGGLES AND ADEQUATE PROTECTIVECLOTHING. AVOID CONTACT WITH FUEL SPRAYWHEN BLEEDING HIGH-PRESSURE FUEL LINES.WARNING: DO NOT BLEED AIR FROM FUEL SYSTEMOF A HOT ENGINE. DO NOT ALLOW FUEL TOSPRAY ONTO EXHAUST MANIFOLD WHEN BLEEDINGAIR FROM FUEL SYSTEM.

guesswho512

guesswho512

Posted
Posted

(1) To determine which fuel injector is malfunctioning,run engine and isolate each cylinder usingDRB scan tool. The DRB scan tool lists the injectorfiring order in both cylinder numericalorder (1–2–3–4–5–6), and actual firing order(1–5–3–6–2–4).(2) Note RPM drop for each cylinder. As an alternative,loosen high-pressure fuel line fitting at fuelinjector connector tube (Fig. 15). Listen for a changein engine speed. After testing, tighten line fitting to40 N·m (30 ft. lbs.) torque. If engine speed drops,injector was operating normally. If engine speedremains same, injector may be malfunctioning. Testall injectors in same manner one at a time.4) After injector has been removed, obtain benchmountfuel injector tester OTCt (SPXt) part number4210 (Fig. 16) (or equivalent). Install Special Toolnumber 8301 (Fuel Injector Adapter) to 4210 tester.Install fuel injector into 8301 adapter. Be sure tip ofadapter tool 8301 is aligned to inlet hole at side ofinjector (Fig. 17) before tightening tool. Tighten tool8301 to injector. Position container below injectorbefore testing.

guesswho512

guesswho512

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(5) Refer to operating instructions supplied withpressure tester for procedures.(a) Check opening pressure or “pop” pressure.Pressure should be approximately 31,026 kPa (310bars) or (4500 psi 6 250 psi). If fuel injector needlevalve is opening (popping) too early or too late,replace injector.(b) Perform a leak-down test on injector. Applypressure with injector tester. The injector shouldnot leak (drip) fuel with pressure at approximately20 bars (291 psi) lower than pop pressure.© Operate tester lever quickly several times tocheck injector spray pattern. Verify fuel is sprayingfrom each injector nozzle hole. Injector should alsospray evenly from each nozzle hole.(d) Pay attention to size and shape of sprayplumes. They should all be equal. If possible, comparespray pattern to that of a new fuel injectorwith same part number. Checking each plume forconsistency is an excellent indicator of injector performance.Even if only one nozzle hole is plugged,significant performance problems could result.(e) Look for burrs on injector inlet.(f) Check nozzle holes for hole erosion or plugging.(g) Inspect end of nozzle for burrs or roughmachine marks.(h) Look for cracks at nozzle end.(i) Check nozzle color for signs of overheating.Overheating will cause nozzle to turn a dark yellow/tan or blue (depending on overheating temperature).(j) Look at end of injector tube where it meetsinjector. A small, shiny band should be seen at thispoint. The band should have a consistent thickness.If not, injector could be leaking into fuelreturn.(k) If any of these conditions occur, replace injector.

  • 1 month later...
04dodge

04dodge

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took off injection lines to swap injectors and found metal shavings where lines are attached on motor. Do I need to replace injectors? where do I go from here?

guesswho512

guesswho512

Posted
Posted

took off injection lines to swap injectors and found metal shavings where lines are attached on motor. Do I need to replace injectors? where do I go from here?

where are the shavings? under the valve cover? in the injector tube. sorry but you were kinda vague.
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Mopar1973Man

Mopar1973Man

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I'm going to guess you found them in the cross over tube inside the head...

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That is a Edge Filter and it there to protect the injectors from debris. so if you want you could pull the cross over tube out and try to blow the debris out of it or you could just replace it.

If you got debris in one of them you might as well check them all...

dieselautopower

dieselautopower

Posted
Posted

are you referring to the overflow valve on the side of the VP44 as the check valve? they are about $40 and should hold about 15psi, if it is opening sooner then you not have the proper fuel pressure. BTW BOSCH RV275 injectors are less $$ than stock injectors

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