 |
 | Home | Contact Us | FAQ | Search & Site Map | Link to Us |
 | Sign In | Join | Other 45 Sites in Network |
Car Forum / BMW Cars / March 2004Spark problems Help 87 325is
Here is what we have done to try and fix. Coil Crank Sensor New plug wire cap and rotor There seems to be spark going to the rotor but not to the plugs. Can anyone suggest a fix for this? this is a 1987 325is. thanks BmwM1 please answer to my email. I will check on here too. I had the same problem and checked and replaced the same items you have. Turned out it was the plug leads. When I was testing them off the car with the ohm-meter they were fine but when installed they were bent in such a way that spark wasn't getting through on two leads - enough to enusre the car didn't fire at all. Steve > Here is what we have done to try and fix. > [quoted text clipped - 11 lines] > BmwM1 > please answer to my email. I will check on here too. > Here is what we have done to try and fix. > [quoted text clipped - 11 lines] > BmwM1 > please answer to my email. I will check on here too. Also, make sure the engine is properly grounded. That spark has to have someplace to go... -Fred W > > Here is what we have done to try and fix. > > [quoted text clipped - 17 lines] > > -Fred W Also check the rotor is actually spinning when cranking the engine, !! could be the timing belt has stripped a few teeth, ( assuming this is the M20 engine) I hope I am wrong , Peter > Also check the rotor is actually spinning when cranking the engine, !! > could be the timing belt has stripped a few teeth, > ( assuming this is the M20 engine) > I hope I am wrong , If that had happened he would have lost compression in at least a couple of cylinders which would be noticeable when cranking. > > Also check the rotor is actually spinning when cranking the engine, !! > > could be the timing belt has stripped a few teeth, [quoted text clipped - 3 lines] > If that had happened he would have lost compression in at least a couple of > cylinders which would be noticeable when cranking. Quite true Fred,,,, But I have known people to run the battery flat trying to start a dead engine due to cam belt failure, They just continued cranking the engine until the pistons bend the valves , a comp test sounds like a good idea though,,, Peter Checked it all out and everything is fine. There is also injector pulse. just no spark getting to the new plug wires. > > > Also check the rotor is actually spinning when cranking the engine, !! > > > could be the timing belt has stripped a few teeth, [quoted text clipped - 12 lines] > a comp test sounds like a good idea though,,, > Peter Check the crackshaft position sensor, which sits in front of the cam-belt cover. It should have about a 2mm gap between itself and the bottom pulley. If it's failed or the gap is too big the car won't run. It's very easy for it to get knocked out of place if you're messing around with leads etc. Check wiring to the sensor too. Steve > Checked it all out and everything is fine. There is also injector pulse. > just no spark getting to the new plug wires. [quoted text clipped - 16 lines] > > a comp test sounds like a good idea though,,, > > Peter > Check the crackshaft position sensor, which sits in front of the cam-belt > cover. It should have about a 2mm gap between itself and the bottom pulley. [quoted text clipped - 3 lines] > > Steve Can't be that because he said he is getting a good spark from the coil. You seem to have it narrowed down to just a few possibilities: Coil wire to distributor. (or did you use this to verify spark from the coil?) Rotor Cap Plug wires Plugs I know you said that you replaced some of these parts, which makes them even more suspect, being an unknown quantity. In the electronics service industry, we always first suspect the MRFWU... Most Recently <ahem> Fiddled With Unit... -Fred W > > Check the crackshaft position sensor, which sits in front of the cam-belt > > cover. It should have about a 2mm gap between itself and the bottom [quoted text clipped - 23 lines] > > -Fred W Sorry folks Did we establish what engine code it is, ?? Peter > Checked it all out and everything is fine. There is also injector pulse. > just no spark getting to the new plug wires. So the rotor is spinning when cranking, and your compressions are OK Peter >>>snip>>> "Fitzy" <peterfitzpatrick@btopenworld.com> wrote in message news:<c1thd6> > Also check the rotor is actually spinning when cranking the engine, !! > could be the timing belt has stripped a few teeth, > ( assuming this is the M20 engine) > I hope I am wrong , > > Peter I had this once, althogh not on a BMW - the drive from the camshaft to the dizzy broke so the rotor wasn't spinning. Use a spark tester from the coil to the distributor. If you have spark there, put it between the distributor and the number 1 plug wire. If you have spark there, it is a fuel problem. > Here is what we have done to try and fix. > [quoted text clipped - 11 lines] > BmwM1 > please answer to my email. I will check on here too. "Fuel" ? I see where your going Rod , but "BK" has already said there is no spark at the plugs , but there is a spark at the rotor, What about a quick elimination test, remove all spark plugs, squirt 10cc of fuel in to each cylinder, replace the spark plugs and give it a whirl, if it is fuel, then the engine will fire up, but will only run for a second or two Fitzy > Use a spark tester from the coil to the distributor. If you have spark > there, put it between the distributor and the number 1 plug wire. If you [quoted text clipped - 16 lines] > > BmwM1 > > please answer to my email. I will check on here too. I don't know how you are testing for spark Pull a plug wire, put a new plug into it. and hold it against the engine while cranking it over.Do the same for the coil wire. If the plug will fire from the coil but not from the distributor, you are getting all the signals to and from the ECM. In that case the distributor is not turning. Remove the cap and watch while you crank it. Either the distributor drive lugs are broken or the timing belt is stripped or broken.If it is the belt, you have a lot of bent valves. Thanks FITZY I had to go back and read BK's original message. It's hell getting old. The eyes go first, thats why they look better at 10:00 instead of 12:00. Grins. > Here is what we have done to try and fix. > [quoted text clipped - 11 lines] > BmwM1 > please answer to my email. I will check on here too. If the car is a manual you can stick it in gear and pull it forward while watching the rotor. If it turns, the cambelt is probably ok. Steve > I don't know how you are testing for spark Pull a plug wire, put a new plug > into it. and hold it against the engine while cranking it over.Do the same [quoted text clipped - 23 lines] > > BmwM1 > > please answer to my email. I will check on here too. > I don't know how you are testing for spark Pull a plug wire, put a new plug > into it. and hold it against the engine while cranking it over.Do the same [quoted text clipped - 6 lines] > getting old. The eyes go first, thats why they look better at 10:00 instead > of 12:00. Grins. Hi Rod, When we where young,, we looked good and did everything quick, now we're that bit older, we do everything slower, AND WE STILL LOOK GOOD, ;-) Fitzy > > Here is what we have done to try and fix. > > [quoted text clipped - 12 lines] > > BmwM1 > > please answer to my email. I will check on here too. |
Reply to this Message |
 Sign In
 Join
 My Latest Posts My Monitored Threads My Blog My Photo Gallery My Profile My Homepage Start New Thread Enable EMail Alerts Rate this Thread
|
©2009 Advenet LLC Privacy Policy - Terms of Use
This website includes both content owned or controlled by Advenet as well as content owned or controlled by third parties.