• Ciao Guest - You’ve landed at the ultimate Guzzi site. NEW FORUM REGISTRATIONS REQUIRE EMAIL ACTIVATION - CHECK YOUR SPAM FOLDER - Use the CONTACT above if you need help. New to the forum? For all new members, we require ONE post in the Introductions section at the bottom, in order to post in most of the other sections. ALWAYS TRY A SEARCH BEFORE STARTING A NEW TOPIC - Most questions you may have, have likely been already answered. DON'T BE A DRIVE-BY POSTER: As a common courtesy, check back in and reply within 24 hours, or your post will be deleted. Note there's decades of heavily experienced Guzzi professionals on this site, all whom happily give endless amounts of their VALUABLE time for free; BE COURTEOUS AND RESPECTFUL!
  • There is ZERO tolerance on personal attacks and ANY HYPERLINKS to PRODUCT(S) or other competing website(s), including personal pages, social media or other Forums. This ALSO INCLUDES ECU DIAGnostic software, questions and mapping. We work very hard to offer commercially supported products and to keep info relevant here. First offense is a note, second is a warning, third time will get you banned from the site. We don't have the time to chase repeat (and ignorant) offenders. This is NOT a social media platform; It's an ad-free, privately funded website, in small help with user donations. Be sure to see the GTM STORE link above; ALL product purchases help support the site, or you can upgrade your Forum profile or DONATE via the link above.
  • Be sure to see the GTM STORE link also above for our 700+ product inventory, including OEM parts and many of our 100% Made-in-SoCal-USA GTM products and engine kits. In SoCal? Click the SERVICE tab above for the best in service, tires, tuning and installation of our products or custom work, and don't miss our GT MotoCycles® (not) art on the BUILDS tab above. WE'RE HERE ONLINE ONLY - NO PHONE CALLS MADE OR RECEIVED - DO NOT EMAIL AND ASK QUESTIONS OR ASK TO CALL YOU.
  • Like the new V100, GuzziTech is full throttle into the future! We're now running on an all-new server and we've updated our Forum software. The visual differences are obvious, but hopefully you'll notice the super-fast speed. If you notice any glitches or have any issues, please post on the Site Support section at the bottom. If you haven't yet, please upgrade your account which is covered in the Site Support section or via the DONATE tab above, which gives you full site access including the DOWNLOADS section. We really appreciate every $ and your support to keep this site ad-free. Create an account, sign in, upgrade your account, and enjoy. See you on the road in 2024.

Tonti overheating. 750S Resto.

T

twin750

Just got it firing!
Joined
Sep 1, 2010
Messages
1
Hi folks. My name is Tony. l live in Brisbane , Queensland , Australia.
My mates call me 'Barney'.

ln the process [past 2yrs] of getting my 750S running. l'll keep this short and sweet as l can.

The bike had sat idle for at least 3yrs before l bought it , and another 2yrs in my garage. [other projects running].
lts 95% original and is in "used and well ridden" condition.

Only a few days ago finally got the fuel system setup , carbs serviced , hoses , needles and jets etc.
New Deka ETX30LA battery and NGK BP7ES plugs.

2nd startup the bike ran rough but was running on both barrels. No smoke. LH head 'tick tick tick' but RH head running very smooth.

3rd start. Tweaked carbs and air/fuel mix and got her running sweet , but LH head rattling more and getting much hotter than RH head.

Engine off. Removed rocker covers [again] and oil present in both heads. Drained oil and removed sump. Checked gauze and oil pump. All good and remarkably clean.

Reassembled. Start again and after approx 2-3mins of 'fast idling' [with throttle] , the LH head very hot and rattling loudly.
Engine off.

Any ideas/suggestions?

Tony.
 
Start by checking valve clearance and then do a compression test. Let us know what you find. I'm suspecting a bad exhaust valve, but you may get lucky.
 
Did the 750s have chrome cylinder bores? If so, are you sure they haven't peeled?

Just a thought.

I agree on the compression test. Have you touched/checked the ignition?
 
Per Guzziology, came with chrome bore-although many a bike of this era that started with chrome bore has been converted somewhere down the road, so unless you/prior owner know for sure, you'll have to check.
 
You must log in or register to reply here.
Back
Top