James's Extended Track Goblin - 06 LS donor
- Thread starter jamesm
- Start date
jamesm
Goblin Guru
Thank you!
jamesm
Goblin Guru
So yeah… made a fun discovery yesterday…
I’m trying to get the goblin back together and I’m finally to a point to try and start it… except, it tries to start as soon as I hook the battery up…
Some beating and banging and cussing later, looks like the brand new starter I got has a bad solenoid so it’s getting RMA’ed…
Yeah… fun times….
I’m trying to get the goblin back together and I’m finally to a point to try and start it… except, it tries to start as soon as I hook the battery up…
Some beating and banging and cussing later, looks like the brand new starter I got has a bad solenoid so it’s getting RMA’ed…
Yeah… fun times….
jirwin
Goblin Guru
Man that's frustrating. Was it brand brand new or a "brand new" reman like most auto parts stores sell? My dad and I went thru hell trying to get his F150 starter fixed. Ended up going brand new OEM in the end and it has worked fine since. I cringed when I dropped my started on the ground during disassembly a few weeks ago. Fingers crossed I don't have to get a new one myself.
jamesm
Goblin Guru
Finally getting back to the goblin. I replaced the starter and found a couple more electrical gremlins and now it turns over when I turn the key. The problem now is it won't actually start. Well... it actually did start once for about 3-4 seconds and now it just cranks but never actually tries to start.
The fuel pump primes and the injectors are spraying, the plugs spark, I'm out of ideas aside from starting to pull the motor back apart looking for problems.
Here's a video of it cranking. I'd appreciate any other ideas y'all may have.
The fuel pump primes and the injectors are spraying, the plugs spark, I'm out of ideas aside from starting to pull the motor back apart looking for problems.
Here's a video of it cranking. I'd appreciate any other ideas y'all may have.
Desert Sasqwatch
Goblin Guru
Assuming you are using gas and nor E85, if you pull the spark plugs after cranking, do you smell fuel? Since it did run for a short period of time, have to believe the electrical is (mostly) working. Sounds like you have fuel and spark - maybe timing? Was the timing chain worked on?
jamesm
Goblin Guru
You can definitely smell fuel and the spark plugs are wet. Over the last couple days, we've probably cranked the engine for 10-15 minutes.
Desert Sasqwatch
Goblin Guru
If you put your palm over the intake pipe end while cranking you can feel it pulling air? Same for the exhaust pipe, but pushing air? Can you smell raw gas at the exhaust pipe? If so the spark is not firing off the fuel mixture. Timing?
Desert Sasqwatch
Goblin Guru
Oh no! that's not good. That will definitely prevent a start, sorry about that. How did you decide to remove the valve cover?
jamesm
Goblin Guru
I was starting down the timing path. The valve cover was the easiest to remove so I started there. I was going to pull the timing cover and oil pan too but I saw those broken bits so I stopped there.
Now to the hard question. Do I just replace the rockers and cross my fingers or do I pull the head and verify that nothing fell into the cylinders......?
Desert Sasqwatch
Goblin Guru
The cam (exhaust?) and follower/rockers will need to be replaced at a minimum from the photo. The valve tips will need to be inspected, any with even minor damage will need replacement. As @Brett stated, a borescope check of the cylinders would be a good idea, checking to see if any piston top damage - if found it's possible there could be valves damaged. The oil pan should be dropped to determine if anything found its way down there. Unfortunately with broken valve train components many times there is lots of hidden damages.
jamesm
Goblin Guru
The rockers that broke are on the intake side.
We're gonna pull the head, timing cover, and oil pan tomorrow night and verify the majority of the components. I think I found all the bits of the broken rockers so hopefully there won't be any parts floating about. We'll have to do all that no matter what since we'll need to retime the engine after we replace all the rockers.
We're gonna pull the head, timing cover, and oil pan tomorrow night and verify the majority of the components. I think I found all the bits of the broken rockers so hopefully there won't be any parts floating about. We'll have to do all that no matter what since we'll need to retime the engine after we replace all the rockers.
Scott #321
Well-Known Member
Bummer hope it doesn't effect your autocross season.
Desert Sasqwatch
Goblin Guru
OUCH! Either someone under torqued and the bolts backed out to allow the gear to move and eventually break OR someone over torqued the bolts and they fatigued and broke off. It's a real mess no matter how it happened, sorry to see this is becoming a bigger job with everything you disassemble. 