Unfortunately the tech assumed it skipped a tooth because of the uneven cranking sound, backfiring and weak or no spark from the coil. He did not remove the connectors for the injector nor the coils and so when cranking it would sound like it had a compression problem. If he had disabled the fuel and or coils as I did the engine cranking sound would have pointed him away from a timing problem.
Thanks very infomative :) Learned alot. Keep going with interesting videos. I soon will be finish studying as a mechanic too on heavy duty mashines....Have Q ...why did it backfire when the ignition-cables was not mixed wrong in firing order as it usually are when it do like that?
This system uses waste spark ignition, meaning it fires one cylinder at compression and the running mate during exhaust. My theory is because it still have fuel going into the cylinders which did not get ignited during compression it gets ignited when it goes into the exhaust manifold via the other cylinders during exhaust stroke. Poor ignition is also a cause for backfire. Because lpg burns at a slower rate it is possible that it is still combusting when the exhaust valve opens.
@@forkliftgeek10 Thanks! Didnt know about the "waste spark igintion". So the fuel could get ignited via the exhaust manifld ..by heat then? Also other reason for backfiring was interesting to know. Q: I am just about to look for job ... how did you get yours?
I was a forklift operator when my forklift broke down and a mechanic went in. He opened it up and I saw that most of the parts I recognized and know how it worked, so he gave me a calling card and told me to apply as an apprentice.
Having issues with my Ford F-250 did an engine swap from a V10 to a 5.4 no I have a backfire I think it's because there's two extra injectors on the V10 and the 5.4 has eight what can I do in my situation I need my truck running if you've been in this situation can you please help we're trying to troubleshoot this problem
You know what sir this Vedio hopefully can help on me to fix my car I'm not saying that I'm a mechanic but bec of very expensive the labor in the shop so I need to practice about engine specially if you have own car you need to learned about engine. My car also is hard to start then I don't know how to fix it I expend already 1500 but same problem
Most of it is by taking captures of normal as a reference. When it comes to electrical circuits understanding of the component you are testing and how voltage and current behaves through that is critical in determining what is normal.
Thanks for the advice! I am a technician for an MCFA dealer. I am looking for ways/tools to make more accurate diagnosis. Hopefully the Picoscope helps.
Thanks for the video. A 93 S10 came to my shop. It had no spark nor injector pulse. So I fixed the spark and fixed the injector pulse. Car still won’t start and if I mash on the gas while starting the intake would backfire and catch on fire. I’m thinking the previous guy who worked on it did not put the distributor properly.
Great video and explanation as always keep them coming
Another great video, cheers!
Nicely done!
Great tech, simplicity en Enlightenment! 👍🤝
GOD BLESS YOU AND YOUR FAMILY IN THE NAME OF JESUS CHRIST FOR MAKING THIS VIDEO 🎉
I'm wondering why they didn't check for spark on both coils. Otherwise, awesome video, thanks!
Unfortunately the tech assumed it skipped a tooth because of the uneven cranking sound, backfiring and weak or no spark from the coil. He did not remove the connectors for the injector nor the coils and so when cranking it would sound like it had a compression problem. If he had disabled the fuel and or coils as I did the engine cranking sound would have pointed him away from a timing problem.
This is the stuff right their.
Thanks very infomative :) Learned alot. Keep going with interesting videos. I soon will be finish studying as a mechanic too on heavy duty mashines....Have Q ...why did it backfire when the ignition-cables was not mixed wrong in firing order as it usually are when it do like that?
This system uses waste spark ignition, meaning it fires one cylinder at compression and the running mate during exhaust. My theory is because it still have fuel going into the cylinders which did not get ignited during compression it gets ignited when it goes into the exhaust manifold via the other cylinders during exhaust stroke. Poor ignition is also a cause for backfire. Because lpg burns at a slower rate it is possible that it is still combusting when the exhaust valve opens.
@@forkliftgeek10 Thanks! Didnt know about the "waste spark igintion". So the fuel could get ignited via the exhaust manifld ..by heat then? Also other reason for backfiring was interesting to know. Q: I am just about to look for job ... how did you get yours?
I was a forklift operator when my forklift broke down and a mechanic went in. He opened it up and I saw that most of the parts I recognized and know how it worked, so he gave me a calling card and told me to apply as an apprentice.
Having issues with my Ford F-250 did an engine swap from a V10 to a 5.4 no I have a backfire I think it's because there's two extra injectors on the V10 and the 5.4 has eight what can I do in my situation I need my truck running if you've been in this situation can you please help we're trying to troubleshoot this problem
What scope are you using
Picoscope
You know what sir this Vedio hopefully can help on me to fix my car I'm not saying that I'm a mechanic but bec of very expensive the labor in the shop so I need to practice about engine specially if you have own car you need to learned about engine. My car also is hard to start then I don't know how to fix it I expend already 1500 but same problem
I am.looking at buying a Picoscope. How do you know when a wavelength is normal verse one that shows there is an issue?
Most of it is by taking captures of normal as a reference. When it comes to electrical circuits understanding of the component you are testing and how voltage and current behaves through that is critical in determining what is normal.
Thanks for the advice! I am a technician for an MCFA dealer. I am looking for ways/tools to make more accurate diagnosis. Hopefully the Picoscope helps.
which pico software were you using for this?
Picoscope 6
Anybody know where the diag connector to pull codes on these ?
On the right side of the steering column
Thanks for the video. A 93 S10 came to my shop. It had no spark nor injector pulse. So I fixed the spark and fixed the injector pulse. Car still won’t start and if I mash on the gas while starting the intake would backfire and catch on fire. I’m thinking the previous guy who worked on it did not put the distributor properly.
Ignition timing is definitely suspect.
Correct , or misplaced wires to distributor, check firing ORDER
Salamat!
Do you have a contact email? Having lp truck/crane motor issues.
Thanks
Just message me on Instagram or Facebook.
F