We just bought a chevy blazer from this guy for 500 dollars. He said it didn't ren that the guy had done work to the fuel system and had crossed wires somewhere. We figured it would be a steal to buy it for 500 and fix that tiny problem and have a great new truck. well once we got it home itsturned out a bad idea. no wires were crossed. its a 2.8 L TBI. We have gone through and tried to figure out everything. Seems all areas are getting power in the voltage it calls for in the tech book. The gas is getting through everywhere but once it gets to the throttle body its not coming out. Anyone have any idea what could be causing this? My boyfriend just went ahead it put it in the trading post to sell for now cause we are tired of dealing with it. Ang suggestions would be very helpful
2007-09-17 05:32:27 · 3 answers · asked by luvinmykevin 4 in Cars & Transportation ➔ Car Makes ➔ Chevrolet
Thanks guys we have checked everything in the ignition and all. changed the spark plugs and wires. The motor is in great condition. Chuck, I like your answer. I will definately try that.
2007-09-17 07:17:30 · update #1
i have had this problem in my shop before it is one of two things ether the computer is bad or there is a sensor in the distributor that tells the injectors when to fire the distributor is the culprit 9 out of 10 times you can test it by removing it and hooking all of the wires back up to it and then spin the distributor by hand if you don't hear the injectors clicking that is the problem
2007-09-17 07:10:19 · answer #1 · answered by chuck 2 · 1⤊ 0⤋
If it doesn't start, you have to check for spark outputs at the spark plugs. You will also have to check for the actual fuel pressure. I am assuming the motor is okay here, but if not or unsure do a compression test. If you have no spark, that would also tell me that the primary ignition is probably not working as the injectors are fired by means of a tach signal which comes from the ignition. The easiest way to check for primary ignition is to install a test light into the tach signal at the ignition coil. Turn the ignition on and the test light should light. Then crank the motor over, the test light should blink very quickly. Then chase and repair as nec, as in pick-up coil and/or module.
2007-09-17 07:11:34 · answer #2 · answered by Deano 7 · 0⤊ 0⤋
If it cranks but doesn't start running, you first check for good ignition spark using the spark tester below. If that's ok, check for proper fuel pressure.
http://www.napaonline.com/MasterPages/NOLMaster.aspx?PageId=470&LineCode=BK&PartNumber=7002456&Description=Electronic+Ignition+Spark+Tester
2007-09-17 05:37:24 · answer #3 · answered by bobweb 7 · 0⤊ 0⤋