Jonota
11-11-2010, 11:46 AM
Hey guys! New to forum, looking for some help, eventually hope to give some myself.
I've been researching buggies for several weeks, and this issue about 2 weeks itself. I purchased a Crossfire 150R from a local guy. He drove about 2 hours to deliver it to me. Initially, after a jump, it fired right up and idled fine. It backup up approximately 10ft just fine, went into forward and took off apparently normal. After about 30 yards it shut down completely and hasn't had any "fire" since then.
Immediately we spent about 2 hours going through the cart, as I was reluctant to purchase. Eventually, I offered him less expecting a clogged carb jet. We were getting spark, sounds of compression, but no fuel to the plug. After tearing the carb down and blowing it all out, I get fuel to the plug now, but still no fire whatsoever.
After research, generally the advice seemed to be valves/valve timing. I have verified that w/ the line to the left of the "T" on the flywheel aligned to the large mark on the engine casing, the 2 small holes on the cam gear are level w/the head, and the big hole is up. I also adjusted the valves to .003" in this condition (initially, the exhaust valves had a good INCH of clearance!). Still no fire. I have a compression gauge, but don't have the adapter to fit the small hole. If I put my finger on the hole I have to apply a decent amount of pressure to keep it from blowing past my fingers... I have read 130psi... so I'm not sure if this is enough.
The only "glaring" deficiency I can find at this point is that the enrichment/auto choke does not have an o-ring installed in it. I don't think that this would completely prevent it from running. I have not recently reverified that I have spark, so I may have lost that in process. I sincerely hope I didn't just buy a cart when it gave up the ghost on the engine. It is supposedly a bored/stroked Howhit 175cc+ (haven't done any verification, but have receipts).
Any suggestions? Directions? I tried **********.com and haven't had any responses so far... I'm at a loss besides pulling the entire engine assembly and tearing it all the way down. I'm itching to go out with the boys, as I've bought a new 150cc and 110cc for them to ride in. I've gotta say I'm very impressed with the stock 150cc, so I'm curious to see just how impressive this modified engine will be.
Thanks in advance for any replies!
Jon
I've been researching buggies for several weeks, and this issue about 2 weeks itself. I purchased a Crossfire 150R from a local guy. He drove about 2 hours to deliver it to me. Initially, after a jump, it fired right up and idled fine. It backup up approximately 10ft just fine, went into forward and took off apparently normal. After about 30 yards it shut down completely and hasn't had any "fire" since then.
Immediately we spent about 2 hours going through the cart, as I was reluctant to purchase. Eventually, I offered him less expecting a clogged carb jet. We were getting spark, sounds of compression, but no fuel to the plug. After tearing the carb down and blowing it all out, I get fuel to the plug now, but still no fire whatsoever.
After research, generally the advice seemed to be valves/valve timing. I have verified that w/ the line to the left of the "T" on the flywheel aligned to the large mark on the engine casing, the 2 small holes on the cam gear are level w/the head, and the big hole is up. I also adjusted the valves to .003" in this condition (initially, the exhaust valves had a good INCH of clearance!). Still no fire. I have a compression gauge, but don't have the adapter to fit the small hole. If I put my finger on the hole I have to apply a decent amount of pressure to keep it from blowing past my fingers... I have read 130psi... so I'm not sure if this is enough.
The only "glaring" deficiency I can find at this point is that the enrichment/auto choke does not have an o-ring installed in it. I don't think that this would completely prevent it from running. I have not recently reverified that I have spark, so I may have lost that in process. I sincerely hope I didn't just buy a cart when it gave up the ghost on the engine. It is supposedly a bored/stroked Howhit 175cc+ (haven't done any verification, but have receipts).
Any suggestions? Directions? I tried **********.com and haven't had any responses so far... I'm at a loss besides pulling the entire engine assembly and tearing it all the way down. I'm itching to go out with the boys, as I've bought a new 150cc and 110cc for them to ride in. I've gotta say I'm very impressed with the stock 150cc, so I'm curious to see just how impressive this modified engine will be.
Thanks in advance for any replies!
Jon