I replaced it again still nothing.. any ideas? 5.7 vortec no start has fuel and spark switch. I would agree with Chrisbmo, I would say it is a sensor thing. A reading of 0 indicates an internal short in the ignition coil while a reading over 2 suggests an open circuit. Hey guys so I had to put this job off for a little while, but now the car is all back together with a new timing chain, optispark, sparkplugs, spark plug wires, fuel pressure regulator, and fuel filter. When you turn on the key or push the button, the injectors should receive battery voltage. Engine cranks, no start, gas fumes/smoke puffs out of intake.
5.7 Vortec No Start Has Fuel And Sparkle
I went ahead and bought a new FPR so I'll give it a shot today sometime and reply back. There are no individual injectors per say, it is a spider assembly that has fuel lines that plug into the intake and the main wiring hookup and fuel line hookups and beyond the regulator is non serviceable. So, you can also try, holding the gas pedal all the way down when cranking. Join Date: Jul 2007. 7L - Cranks, No Start, Weak Spark. I have a 98 z71 silverado and it was doing the same thing. Like Most People, You Checked The Most Important Things First: - The fuel pump is running and delivering normal pressure to the engine. 5.7 vortec no start has fuel and spark plugs. Did you see if the injectors are firing? I have other projects needing done paying jobs that is. Now it just starts and dies a second or so after starting. The pump definitely doesn't keep up, since it does not run at all except on the relay starting sequence circuit.
Thanks in advance DW. I'm thinking my friend that has the scanner might have an older one. But I am some way from that, with a good list of easier stuff to check. Having a good spark plug test tool is a good idea as they are low-cost and easy to use. Pressure steadily drops to around 55 psi (which is below the minimum spec of 61 to fire the injectors). Ground the plug btw. Can a timing set work its way out of time if not EXACTLY in the right position? And now it wont start at all, it just cranks continuously. Engine Will Not Start - But, Fuel Pump, Spark And Compression Are Good. The rest of the plugs are easily accessible through the wheel wells, with the front wheels off the ground. You may be only one person in the world, But you may also be the world to one person.
5.7 Vortec No Start Has Fuel And Spark Switch
Burb was running again. By using switches, people can break or change the circuit; allowing them to try and fix the problem and start the car again. 1998 GMC Sierra SLE 1/2 ton 2WD 305 Vortec. Yeah... we are only getting AC Delco parts from now on... Had someone crank it over. The main thing is to see if the coil is sending out a spark.
Attachments: Last edit: 28 Aug 2019 14:54 by rpd1125. 1998 K1500 Vortec starts but won't run -- help! Just for grins, I checked the operation of the pump relay. It is possible that the cause is the ignition switch at "run. 97 5.7 Vortec won't start. " Will it start for a couple seconds and then stall or does it make no difference? Checked all the fuses there good. Found in Chevy and GMC trucks, 5. The one thing I haven't seen you mention that you've tested is for injector pulse. I'm thinking more leaky fuel injectors or bad fuel pressure regulator. Heres a video, still hard to hear the click.
5.7 Vortec No Start Has Fuel And Spark Starter
Read the resistance using the multimeter. The high-voltage spark produced by the ignition coil is what fires up the engine, and there are a lot of conditions that must be met for this to happen. Here is an example spark plug test tool on Amazon. This could be an ignition problem but I doubt it based on the half inch of spark you have but it is still it run on carb cleaner? Just a few more ideas. Not Allowed: to edit your message. Go into the injector drop test. I'd like to at least get this thing firing on the basics before replacing expensive parts. NO SPARK vortec 5.7 ran fine then wouldnt start. Did you have the timing chain apart or the distributor out? Something else to think about which engine swaps is that wiring harnesses are sometimes damaged in the process and grounds aren't always connected properly.
Ok this is where I am at on my truck. That thing had rolled counter clockwise 1 1/2". I double checked the distrub. 5. 5.7 vortec no start has fuel and spark starter. thanks for that vetteoz, I'll read through that and see how things go. Let me know if the module changes it. However I think based on the above facts I've narrowed it down to something in the fuel delivery system. Also, the (PCM) driver circuit, provides the ground connection, to energize the injectors. I'll try to see about getting it to him. Image (Click to enlarge). TIP: You can also measure the resistance of each injector with an ohmmeter.
5.7 Vortec No Start Has Fuel And Spark Plugs
No flashes from the injector circuit when cranking the engine; would tell you the (PCM) is not pulsing the injectors. Don't know for sure though, w/o being there. First of the injectors. Hey guys I need some input here!
Also, you mentioned that you replaced the distributor. When it goes bad, it also causes issues with the spark. Luckily, lots of companies are now using easier technology; to make sure car owners can fix this themselves. As a result, the engine will not start. It's very possible all the cylinders are washed. If not flashing while cranking, opti is bad. Obviously some of the cylinders aren't firing. That nearly follows the firing order (1, 8, 4, 3, 6, 5, 7, 2). That was the very first thing I tried. Oil pressure switch was changed 3 months ago with a BWD. Disconnect the connection(the one that is held with the small metal clip) on fuel injector number 1. Transmission: 700R4.
5.7 Vortec No Start Has Fuel And Spark Used
The rail will hold 65 psi forever if the engine is not cranked, so it is not a check valve problem. SO this leads me to believe that what ever caused the original motor to quit is still the problem. If you pump up the pressure and leave the truck sit for an hour on a run to town (a 14-mile round trip for each run, mind you), it will still hold pressure when you get back, so it is not the in-tank check valve. The 98.............................. HAS.......................... a crank sensor my 97 has one you self (and me) and look at the passengers side of the crank right behind the ballancer and there you WILL find a crank sensor!!!!!!! Wait awhile, then try it again. If you have any sort of spark whether it's timed or not with fuel, its gonna backfire sooner or later. If it drops it's good if it doesn't it's stuck. 6. thanks guys i brought the number one cylinder up by bumping it today pulled my distributor and i am sitting on the peg for the number 7 cylinder do you think i could get it started good enough to run if i pull the distributor with number one cylinder up and reset it to number one then drop it back down or am i going to cause issues. Was created by simperfi84.
2. also its a 97 gmc Sierra 1500 extended cab with it being a 97 there is not a passlock security system on it they were put on in 98 any help will be awesome just need this thing to run. And I was mistaken before it's the k1500 not the c (4wd).
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