Tbi Chevy Running Rich.| Grassroots Motorsports Forum

July 4, 2024, 10:31 pm

3L V6: Fuel & Air: Fuel Injection Pressure Regulator: Intentionally blank: Related Parts. Runs and drives Excellent with no problems. 88 350 TBI Running Extremely Rich in Closed Loop. I just did the TPS again on Friday (you could wiggle the plug and it would hunt so I figured the sensor) and now it's running even more bogged. The only timing the end-user sets is to establish the reference timing, in this case it's 0* with the ESC wire disco'd on GM TBI engines. If you unplug an injector and it works, I would wonder whether there is a power supply problem to the injectors, or a shorted injector pulling more power than the circuit can handle. This is a factory setting.

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Tbi For 350 Chevy

Video time control bar. Having the timing advanced or retarded will cause problems, … ubg 100 slope If it isnt functioning properly, it will let the engine idle high. How to prove tbi. But the problem persisted before they were changed. Replaced spark plug wires with AC Delco plugs. Still didn't fix the problem. I forgot the coolant temp sensor, that's been replaced as well. You can do this with the key on and the engine off.

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Are there any specific values I should look at? I've been chasing this problem ever since the truck went on the road 6yrs ago. Edit: forgot I also changed the coolant temp sensor). Oxygen sensor (4 times 3 Bosch 1 ntk). If it's faulty (busted spring) it could be going way overboard with pressure when the vacuum drops. I currently am running at 8 degrees advanced with no issues F firechicken383 Registered Joined Oct 17, 2003Hi I have a 1994 k1500 350 tbi and have been chasing a problem with intermittent rough idle and low idle in gear runs fine when reved and going down... I think the FPR is also tied to engine vacuum. Oil … ups transit map With the quality components we use, roller cam, roller lifters, and the machining and balancing processes we offer it's a package that is longer lasting than a stock engine. Ignition all replaced. Gm tbi running rich. Are you sure your vacuum gauge is correct? Gregory mevs family When you set the timing the wire should beunpluged so it does not advance while your are setting the timing. 0 and then lose power when the issue occurred, so i know it is possible to have a condition that rich, although very rare. I may have to bring my truck in to have somebody look at it as this may be above my skill level at this point.

Gm Tbi Running Rich

The next thing I'm going to take a look at is the coolant temp sensor because I've seen in the past that it can make an engine run too rich. 3 · Oct 20, 2011. ignore the compression gauge and marks, just pull the number one plug and rotate engine with a straw sitting in it and resting on the top of the piston. I remember doing that before and seeing the cone, just need to look for the dripping. This didn't really seem to help though. Tbi for 350 chevy. My truck was way overdue for a tune up and I have performed the following but it hasn't helped much: Changed spark plugs with OEM AC Delco 30k plugs and gapped them to 0. OBD2 is the scan tool I have been using to find fault codes. There might be a member nearby who has one you can borrow. 13x13x13 storage cubes Bad MAP Sensor Symptoms.

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I wonder if your flashing injector ground is turning into a continuous ground when the issue is occurring? 7L TBI throttle body gm truck van gmc 4. Most tbi's are set at 0 base timing (wire unplugged). I changed the plugs and there is no change. I know for my 87 there are 2 versions and they operate differently and they are not interchangeable. Do a search on this site to see where other guys have found theirs).

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Here is where the Map sensor is on my 87 R10 5. 06/18/2010 Update: Hi Everyone, Sorry it has taken me a while to respond. And which coolant temp switch did you replace? Does the MAP sensor reading make sense? Vacuum lines are where they should be. That rich correction would be learned to all times- which *might* make it too rich at WOT. Does it go into closed loop and does it stay there when it acts up? Re: Need Help: 350 TBI Running Rich/Bogging. I Think We Fixed The "Running Lean Problem" On the C10! Consult a service manual or see below for any check engine light code definitions. Then check the circuits related to the O2s. You really won't do much better than 9-10. OK, with the engine running, point your timing light at the bottom of the injectors.

Generate Transcript. It has always had a power problem pulling, driving, consuming way too much gas. Just put the thing together and go! Is unplugging 1 of the injectors actually allowing MORE useable fuel into the intake and therefore it runs better? That's why so many people have trouble with dim headlights Posted 9/19/2015 14:01 (#4797526 - in reply to #4796274) Subject: RE: chevy 366 problems: We've. TBI 350 - Setting Ignition Timing Correctly. Depending on your vehicle model, your engine might experience one or more of these performance problems: …2, 319 Posts. I tried plugging in the code reader too and it won't read anything on the computer. Once you get it set plug the wire in to control the automatic advance. Do all of the temperature sensors make sense? I went through this a couple years back on a 454 TBI.