Noz Posted September 21, 2021 Share Posted September 21, 2021 Afternoon all, can't find anything on dr google. Have a really minor judder while driving under load. Feels engine related, disappears when clutch is in. Mainly during constant speed I can notice it. Could this be a misfire from coils? I must add, I think my piston rings have gone. Not sure the micro amount of oil going into the cylinder could cause that to happen. Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted September 21, 2021 Share Posted September 21, 2021 Is it engine speed related? So off load theres no judder? Is there a certain road speed it happens? Quote Link to comment Share on other sites More sharing options...
Noz Posted September 21, 2021 Author Share Posted September 21, 2021 21 minutes ago, Swampy442 said: Is it engine speed related? So off load theres no judder? Is there a certain road speed it happens? Its definitely lower speeds I notice it. Feels like less throttle makes a difference if I'm honest. Going for a drive tomorrow will report back. But less throttle seems to be more noticeable. So would be lower RPMs Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted September 21, 2021 Share Posted September 21, 2021 Lower engine speeds or road speeds? Try different gears and revs/loads. Could be engine/gearbox mount or prop donut. Where do you feel it, seat etc? Quote Link to comment Share on other sites More sharing options...
Nash Posted October 7, 2021 Share Posted October 7, 2021 I had similar on an MGZT, it was caused by faulty engine mounts ! Quote Link to comment Share on other sites More sharing options...
Noz Posted October 7, 2021 Author Share Posted October 7, 2021 On 9/21/2021 at 9:33 PM, Swampy442 said: Lower engine speeds or road speeds? Try different gears and revs/loads. Could be engine/gearbox mount or prop donut. Where do you feel it, seat etc? Haven't driven the car since to be fair. But usually crusing speeds. Haven't had the new tyres at speed yet to be fair bro. 50 minutes ago, Nash said: I had similar on an MGZT, it was caused by faulty engine mounts ! Oh wow. That would suck. Engine out next year. Until then, I'm not checking those ! lol Quote Link to comment Share on other sites More sharing options...
j_jza80 Posted October 7, 2021 Share Posted October 7, 2021 Pull the plugs and check colour/ condition. Won't cost a thing and may give you an indication if you have an ignition issue. Probably worth checking fuel pressure after that if you're convinced it's engine related. What makes you think your piston rings are dead? Wouldn't continue driving it if that is the case, will end up making the block scrap. Quote Link to comment Share on other sites More sharing options...
Noz Posted October 7, 2021 Author Share Posted October 7, 2021 20 minutes ago, j_jza80 said: Pull the plugs and check colour/ condition. Won't cost a thing and may give you an indication if you have an ignition issue. Probably worth checking fuel pressure after that if you're convinced it's engine related. What makes you think your piston rings are dead? Wouldn't continue driving it if that is the case, will end up making the block scrap. Good shout on the plugs. Will have a look. Maybe I'll see something on the logs. I need to learn how that shizzle works really not played with syvecs. If only I had a friendly guru who could help Smokes on idle. Not on startup. Only when warm. I have a spare block. Why will it scrap it out of interest. Quote Link to comment Share on other sites More sharing options...
j_jza80 Posted October 7, 2021 Share Posted October 7, 2021 1 hour ago, Noz said: I have a spare block. Why will it scrap it out of interest. Assuming it is the rings, Ringland damage will likely follow of left. You'll also have the effects of long term oil contamination, and the knock on effects of the component wear that will cause. Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted October 8, 2021 Share Posted October 8, 2021 Smoke on hot idle sounds like turbo oil seals, you'd have thought if the engine was worn out it would smoke all the time Quote Link to comment Share on other sites More sharing options...
Noz Posted October 8, 2021 Author Share Posted October 8, 2021 21 hours ago, j_jza80 said: Assuming it is the rings, Ringland damage will likely follow of left. You'll also have the effects of long term oil contamination, and the knock on effects of the component wear that will cause. Correct me if I'm wrong. But you're talking more about component damage that block damage. If i rebuild it. With all new parts. None of that matters then really. Its only block integrity I care about currently. 11 hours ago, Swampy442 said: Smoke on hot idle sounds like turbo oil seals, you'd have thought if the engine was worn out it would smoke all the time Had it rebuilt mate. Quote Link to comment Share on other sites More sharing options...
j_jza80 Posted October 8, 2021 Share Posted October 8, 2021 Piston damage leads to bore damage, excessive wear of components causes bore damage (ovality etc) Quote Link to comment Share on other sites More sharing options...
j_jza80 Posted October 8, 2021 Share Posted October 8, 2021 A cylinder leakage test should help greatly Quote Link to comment Share on other sites More sharing options...
Noz Posted October 9, 2021 Author Share Posted October 9, 2021 Compression test? Sounds like a plan. I get oil spray come out the breather on my catch can. Meh. Juddering at low speeds. Fuuuuck smoke pisses me off Quote Link to comment Share on other sites More sharing options...
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