How big of a job is it on these vortecs changed them in the old carborated 350's but not these new ones i cant even see the timing chain cover. This would seem to eliminate the ignition switch as a cause, unless the tester was also bad. This pulse train should run thru the electrical ignition switch, he says. It sputtered once or twice, seemingly randomly, but that's it. Spark and fuel but no start. Member Statistics308, 545. I have fuel pressure and spark and the only thing in between those two is flow which probably means I have a clogged fuel filter so I'm gonna go ahead and replace that. And if the replacement he had put in it a year ago was an aftermarket one, the signs point even closer to that explanation.
5.7 Vortec No Start Has Fuel And Spark Engine
Some are sharp; some are pretty;and some are dull. Brief history, This is a new factory GM motor not a reman with approx 200 miles on it. 5.7 vortec no start has fuel and spark notes. So I did the ICM when I did the distributor (sold as whole unit) and starter fluid does absolutely nothing and no codes are coming from the computer (did jumper test already) the only other thing I've been kicking around in my head is the crank sensor is faulty, but I cant seem to find the thing. Forum Statistics241. Hey guys I need some input here! Many mechanics will test if by holding it close to the ground having a helper crank the truck over and see if a spark jumps to the ground. Problem started when i started truck up the other morning drove 1/4 of a mile and it died and wouldn't start back.
5.7 Vortec No Start Has Fuel And Spark Motor
4 Vortec and ALL will start/run without the MAF/Air cleaner hooked to the throttle body. I'm seriously at a loss at this point. Has spark, has compression. 5.7 vortec no start has fuel and spark engine. So I'm going to replace them tomorrow and cross my fingers because I have literally replaced everything on the ignition side and everything but the actual fuel pump has been replaced on the fuel side. Now if it starts and quits then you have to look futher. First of the injectors. New fuel pump, new dist, new Mpfi injectors, new crank and cam sensors, IC sensor, TPS, etc.
Spark And Fuel But No Start
Reads like the spark is low which could be coil, ignition module, cap, rotor, wires. Fuerdi Ignition Spark Plug Tester Wire in-line Diagnostic Tools Automotive Auto Detector Coil Ignition System Test for Automotive. Rigged a blinker light to test signal to injectors. Location: manly iowa. However I think based on the above facts I've narrowed it down to something in the fuel delivery system.
5.7 Vortec No Start Has Fuel And Spark Plug
I have the procedure for testing one of these if you need to go that direction. He has a friend who has the spider assembly off another Vortec that the guy says works fine. I pressed the schrader valve on the fuel line and it spewed out fuel also I hear the fuel pump kick on when keyed power is turned on. Like I mentioned I probably have my friend take a look at it. I dunno, maybe if the pump did not come on at ALL, I would put more credence into what he says. Has fuel, has spark, cranks, won't start. Due to factors beyond the control of, no information contained in this website shall create any express or implied warranty or guarantee of any particular result. Pressure steadily drops to around 55 psi (which is below the minimum spec of 61 to fire the injectors).
5.7 Vortec No Start Has Fuel And Spark Inside
The engine has spark. Location: Adelaide, South Australia. The one thing I haven't seen you mention that you've tested is for injector pulse. 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.
5.7 Vortec No Start Has Fuel And Spark Notes
Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily! He said the original motor had jumped time. Seems like i'm not getting spark or wrong spark (timing)? I'd appreciate any more suggestions, but I am certain from my diagnostics so far that it is the fuel pump not coming on for the run cycle. He is laid off, and I am trying to get it going for him. Today its back to not starting and misfiring in the same manner it was before. Its hard enough just to walk to the car keep them off you... Engine Will Not Start - But, Fuel Pump, Spark And Compression Are Good. Mosquitos went away so I got the FPR in... the car starts now without puffing smoke but dies immediately after so progress is happening haha. Once several years ago, he had this problem, but it fixed itself quickly and the truck ran fine for all those years. 1996 Chevy C1500 silverado 5. You may be only one person in the world, But you may also be the world to one person. Only think I have not physical check is the injectors actually spraying fuel, which I will do asap already have peallum removed. My buddy has now saved up a little bit of money. Everything is small stuff!
During all this I also noticed that the injectors would not spray while the engine was cranking over. Jumper would eliminate the spider, pressure regulator and ignition as trouble spots if the truck runs with it. 5.7 Vortec No Spark From Coil: Causes And Solutions. Like Most People, You Checked The Most Important Things First: - The fuel pump is running and delivering normal pressure to the engine. Been busy doing other projects. Have the same problem? He thinks this pulse train is not getting to the ECM, so it never re-energizes the fuel pump relay. The 98, BTW, is a distributor ignition, so it has no position sensors.
Remove the distributor cap and crank the engine. Thanks, but it has spark throughout. Normally I've been able to figure these kind of things out, but I'm lost. Locate the ignition coils in your engine.