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lb7 compression test before injector swap|LB7 Balance rates

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lb7 compression test before injector swap|LB7 Balance rates

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lb7 compression test before injector swap|LB7 Balance rates

lb7 compression test before injector swap|LB7 Balance rates : services So got my injectors done (again) on Monday. After about 6 days of driving (around 400 miles) got a real nasty knock that sounds like it's coming from the front of the drivers side . Resultado da 1º PRÊMIO. PIX DE 4 MIL REAIS. Sugestao de uso do premio no valor liquido total de R$ 4.000,00. 14. 26. 07. 03. 39. 22. 01. 33. 38. 08. 02. 36. .
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If the cranking speed is below 140 RPM, repair the slow cranking speed condition before continuing with the compression test. Refer to Engine Cranks Slowly in Engine . I'm about to do a compression test on my LB7. I will need the boost / intercooler tubes out of the way for a couple of the glow plugs. It should be fine to have them off and only . Air compressor and hose with nozzle. Blow all the crap off the top of valve covers before diving in. Also. use compressor to remove old gasket material from valve cover. Blow out injector cups before installing new . The culprit was a bad headgasket and 4 out of the 8 injectors had bad copper crush rings. The blow by was actually going past the cruch rings and into the valve covers. .

compression test LB7 How?

Nasty knock after injector swap

Lb7 compression test

So got my injectors done (again) on Monday. After about 6 days of driving (around 400 miles) got a real nasty knock that sounds like it's coming from the front of the drivers side .

LB7 Injector Symptoms + Diagnosis. The truth is you could toss a coin and have a fair chance of deciding that your LB7 needs a set of injectors, but there is of course a very scientific way to determine which ones are failing. . NEW PICS!!! LB7 INJECTOR REPLACMENT (drivers side) Heres some new pics of an injector replacment! Yellow arrows indicate a part to remove or move. Blue, a place to . How can I test the new LB7 injectors after replacement? After replacing LB7 injectors, conduct post-replacement testing procedures such as leak tests and engine . A compression test on all cylinders will help you get a baseline for the rates. Then figuring out your fuel rate will also help with diagnosing the balance rates. Good luck and .

Replaced out of my own pocket. Truck was back to normal. At about 96,000 I had three injectors go bad. Still within warranty and I went round and round with GM for a few months, and we split the cost of doing all 8 injectors, we each paid 50%. Smoke quit, raw fuel out the tail pipe quit, truck runs like a champ as it did before the swap. My 03 LB7 is in need of injectors and HGs (as verified by dealer and independent shop). So I took a chance on a complete 2004.5 donor truck with the LLY. . I'm bringing it in for a compression test tomorrow and will .

Just curious if anyone has had success with a LBZ swap for an 02 LB7. Mine is puking oil out of the crankcase vent and every shop I talk to tells me that I'm better off with a new engine than trying to repair this one. Its got 160k. Never had injectors replaced. I have found used LLY and LBZ engines for under 6k with under 50k miles. Boy, what a difference! Immediately all my idle smoke was gone. I have 16.5:1 compression and a cam with a lot of overlap, so I still get a tiny bit of haze at elevation, but you have to look for it, and catch it in the right light. . Debating on going with the SAC style LB7 injectors when I go bigger or just doing an LLY top end swap on my . Ran the compression test today. I drove it 10 miles before starting. It was still pretty warm when I started the test, but I got a defective pressure tester from Harbor Freight. I had to drive my Tahoe down and get a new tester. Temp was 80 degrees outside. Disconnected the FICM and pulled all 8 glow plugs prior to starting. Pass Driver So I did a glow plug test. They all tested good with a test light. Did a compression test: 2:275 1:280 4:200 3:260 6:250 5:220 8:275 7:220 For what it is worth, the cups came out with the injectors on cylinders 4 and 3. I .

I went out today to help Mike (Doogie) figure out why his truck wouldn't start. We were figuring an injector hung open as it won't build rail pressure. Anyway, before I headed out, I checked Mitchell for how to disable the injectors for a compression test. Mitchell says "Disable the Fuel delivery system, by removing the IGN 1 relay". What is the correct way to do a compression test on a LB7? I have the tester from harbor freight, but I want to make sure I get the correct numbers. . Should I unplug the 4 plugs that go to the injectors, or just unplug the harness that goes to the FICM? Chevy1925 don't know sh!t about IFS. Staff member. Oct 21, 2009 21,636 5,770 113 Phoenix . While your down there, unhook the big Blue turbo intake hose from the inner-cooler buy loosening the 10mm nut on the clamp and pulling the hose off. Next, unhook the Turbo intake hose off the top of the engine and wiggle it off and set it aside. Starting on the Passenger side remove all the tubing, intake, the fuel filter bracket (there's 3 bolts holding it on and a 4th one . :help My truck is slowly building pressure in the cooling system and pushing coolant out of the overflow occasionnally. I replaced the injectors about 20,000 miles ago, all 8, LDS injectors, merchant injector install kit. 2 cups came out, I put brand new cups, orings, and red loctite from merchant in both. #8 was really hard to get at, and gave me the most hassle .

2007 Chevy CC/SB LBZ Classic LTZ 409CI, Mahle cut and coated Pistons, Carrillo Rods, ARP Main and Head Studs, Keyed Cam and Crank, SoCal Stage 2 heads, PPE Dual Fuelers, PPE Lift Pump, Bullseye S472, PPE Manifolds and up pipes, 5" MBRP Exhaust, S&B Intake, EFI tuned by Mark@Danville:thumb, Exergy 60's Hi, guys. Recently posted back in December about having white smoke after new injector install by commerical diesel repair shop. Also had them change the oil and filter after the fact from all the soot put into the crankcase from the injector over fueling.. this is when the say they found metal in the oil.

The mechanics I've spoken with have recommended a rebuilt engine swap considering the trucks miles, my desire to keep it around, and the cost of machine work. (Thoughts on this are welcome.) Here's what I'm looking at: - DFC LB7 Long Block - LB7 S&S SAC Injectors - Fleece Cheetah Turbo (has original turbo) . Unless your compression test .

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I just changed all 8 injectors and oil new high pressure fuel lines, and now I'm getting excessive blow by from the oil cap and tube by the crank case. The truck wasn't doing this before the injector change smoking this bad. I done the balance rates and injector #4 is like 10.308 and it's throwing the code P304 cylinder 4 misfire. - Before you start, drain the engine coolant incase a injector cup comes out with the injector, causing coolant to pour into the firing chamber! The coolant plug is on the passanger side at the bottom of the radiator. BTW: I will . How do you disable the injectors for a compression test. LBZ: . 2003 LB7 - KD lift pump, 4 inch Diamond Eye QT exhaust, Cat 2 micron filter, PPE boost valve, ported turbo inlet, LML manifold, EFI live tuned, 20x9 Fuel Octanes wrapped in 305/55-20 Cooper Zeon LTZs . Works great to bump the motor to tighten down the rockers when you do a cam . Cylinder 7 is a dead miss! So a compression test is vital. Rail pressure is likely dropping because the injectors are over-fueling so much. I'd do some more investigating on why the rates are all negative by so much. A compression test on all cylinders will help you get a baseline for the rates.

I have an LB7 with about 183k miles on it. I just did all 8 injectors last weekend. Before I did injectors it had a rough idle but the minute I pressed the throttle or went down the road, it stopped shaking. It shakes only when the motor is idling and in any gear, even park. All my balance rates after injectors are 0.0- 0.1 at idle. The Chevrolet Silverado 2500HD/3500HD was only sold for two years with the rounded nose before receiving a facelift for the 2003 model year. The new nose featured sharper lines and took some styling cues that originally debuted on the 2001 Chevy Avalanche. . LB7 Fuel Injectors. . Compression Ratio: 17.5 : 1: Pistons: Cast Aluminum . This is the second lb7 I have put injectors in. The truck was smoking real bad. I replaced all 8 injectors. It does not smoke anymore, but Now there is a fuel knock coming from the injector on the driver's side, third injector from the front. The knock goes away when the fuel line is disconnected. I did a compression test already.

An 02 lb7 swap to an lbz a much more difficult task than an 03-05 truck. The two trucks are just too different. To do it RIGHT you’ll be looking at a major undertaking, not worth it in the slightest amount. Lbz engines are prone for broken cranks even at stock power. They have similar injector issues to the lb7, they just cost twice as much. This comprehensive guide covers everything you need to know about upgrading the injectors in your LB7 engine, including benefits, types of injectors, installation process, maintenance tips, and recommended products. . Before diving into the installation, it's crucial to prepare the engine properly. This includes disconnecting the battery . Compression Ratio: 17.5:1: Firing Order: 1-2-7-8-4-5-6-3: Turbocharger/Air: IHI RHG6 Wastegated Turbocharger And Intercooler: Fuel Injection: Direct Injection High Pressure Common Rail with Bosch CP3 Injection Pump . LB7 Duramax trucks also came before diesel emissions, so there is no DEF, DPF, or SCR here! You could just slap on a straight .

LB7 Duramax Engine Tech Part 1: Short Block Shortcomings and Fixes. When introduced in 2001, there were plenty of naysayers worried that the 6.6L Duramax diesel would never hold up to the abuse and life it’d live in a 3/4 and 1-ton truck.

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Replaced the injectors in an 02 LB7 with 220,000 miles and now it will not start. Truck ran fine before injector replacement other than smoking and starting hard. Replacement injectors were used (about 30k) and are stock injectors. Used this as a filler between other work so it was spread out over about 2.5 weeks.

Hey guys, first timer here. Here's the deal. Had a customer bring his LB7 in with injector issues. Found #6 & 7 both with high rates. I advised changing all injectors but the guy is tight for cash so I just changed the 2. This is the shitty part, I pulled all the injectors and resealed the cups as pr usual. Checked compression, all good.

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Installing 65% SAC Injectors into this LB7 Duramax Diesel! Complete step by step instructions with extra tips.Torque Specs:Injector Hold Down Bolts: 37 ft-lb.

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LB7 injector replacement: My Experience

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lb7 compression test before injector swap|LB7 Balance rates
lb7 compression test before injector swap|LB7 Balance rates .
lb7 compression test before injector swap|LB7 Balance rates
lb7 compression test before injector swap|LB7 Balance rates .
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