4G93 DOHC Problems

[parakey]

no worries bro, previously i thought the same as you but the problem is i couldn't source any stock regulator from the spare part shops i know of, which include an authorized proton dealer. that led me to 2 choices, either a used one from chop shop or, a new FPR by a trusted brand. i went for the latter, cams and injectors are stock. reason why it was already fitted with FPR is cos the previous car owner ran this on a piggyback so he had some extra toys thrown on. hope that answers your question.

:top:

What sort of piggyback was installed? Am looking for ideas for my car

 

[drummydrew]

hmmm.. got any photo of the FPR ah?

i'll snap a shot when i get to my car later

:top:

What sort of piggyback was installed? Am looking for ideas for my car

before one of the windows were smashed and the piggyback stolen, there was a Greddy e manage blue. now the only thing blue left on the car is the Pivot VS lol :shot:

 

[parakey]

before one of the windows were smashed and the piggyback stolen, there was a Greddy e manage blue.

Interesting that they knew there was a Greddy inside. Most times such thefts only involves car radios, smart tag or loose change

 

[drummydrew]

Interesting that they knew there was a Greddy inside. Most times such thefts only involves car radios, smart tag or loose change

this one was really asking for it, previous owner connected it to the storage space on the dash. anyone who walk pass would have seen it

 

[sweelt]

real car thieves, they know what to steal. Even you make ori rims look like cap ayam. Still they know is ori.:hmmmm:

 

[drummydrew]

damn right! a friend's older brother drove his evo8 to girlfriend's place in cheras, left it at the padang nearby. when he got back to his car 30min later, he was left with an evo without bucket seats, gauges, steering, and muffler :flowers:

these thieves got pit stop efficiency!

 

[parakey]

These are likely people who are working in the automotive industry

 

[drummydrew]

scary isn't it? when someone with such skill on cars decides to turn crook

 

[parakey]

Sorry. I think I must have presented it wrongly. I meant workshop, accessory shop or junkyard employees. Typically not earning much but have expensive taste. If got money, no need to resort to theft

 

[drummydrew]

agreed. money the root of evil, worst when one cannot control his desires. i do not doubt these people's enthusiasm, only the channels they use to get there.

gotta keep our cars safe and sound! :proud:

 

[drummydrew]

hmmm.. got any photo of the FPR ah?

here you go

 

[sanekit]

View attachment 562229

here you go

sorry, i didnt make myself clear last time. i wanted to see the whole installation from the fuel rails, hose type, connection and all. haha. but i guess everything is installed correctly then.

 

[sanekit]

View attachment 562229

here you go

did u check the fuel pump too ah?

 

[drummydrew]

sorry, i didnt make myself clear last time. i wanted to see the whole installation from the fuel rails, hose type, connection and all. haha. but i guess everything is installed correctly then.

UPDATE: i just made sure the FPR is fitted, hoses trimmed and screwed on properly. the mechanic who installed it didn't tighten down one of the nut..



started the car and the dial up noise is no more! (DIY FTW) problem now is i can't seem to get an exact 3.2 adjustment, every time i lock the bigger nut it'd go slightly off will drive it later, observe and update.

really thanks for pointing out

 

[vr2turbo]

So the scrapping sound also gone?

Using long screw driver are old school mechanics. My mechanic does the same......lol

 

[drummydrew]

So the scrapping sound also gone?

Using long screw driver are old school mechanics. My mechanic does the same......lol

yes i learnt something old school today!

back from test driving, quiet initially but the dial up noise came back later on

probably a defected FPR, gonna ask for warranty replacement. getting the alternator and compressor checked by AC guy tomorrow.

 

[sanekit]

yes i learnt something old school today!

back from test driving, quiet initially but the dial up noise came back later on

probably a defected FPR, gonna ask for warranty replacement. getting the alternator and compressor checked by AC guy tomorrow.

if it doesnt affect your driving, why change it? hehe. swap muffler and piping to compensate for the dial-up noise.

 

[sweelt]

drummydrew, if engine still healthy, might consider suspension dy....

 

[drummydrew]

if it doesnt affect your driving, why change it? hehe. swap muffler and piping to compensate for the dial-up noise.

whoaaaaaa that's cheating noise with noise! was on DUKE just now, the dial up noise was indeed overwhelmed or in fact, muted by the exhaust lmao! so wrong but so right

drummydrew, if engine still healthy, might consider suspension dy....

engine not healthy.. piping white smoke.. my fund is near to do full overhaul, but friends around me keep poisoning me to drop new head

UPDATES on AC/Idling problem: had my alternator charge rate checked, normal. AC compressor is the correct spec (15C) so that factor is eliminated too. the foreman tested a few spots, made sure the AC system is working fine and suggested it could be the throttle body (back to square one). this isn't his forte so he said best i look for friends who have similar rides to troubleshoot.

called this mechanic in sri kembangan, got my car fixed there once and he is one enthusiastic guy who's crazy over 4G engines, owns a mivec too. anyways, he said the problem could only be around the throttle body area. confirmed by few mechanics already, glad that its narrowed down to that area now :proud: will get it resolved soon. at the same time, jaring is still dialing up in my car :stupid:

 

[parakey]

UPDATES on AC/Idling problem: had my alternator charge rate checked, normal. AC compressor is the correct spec (15C) so that factor is eliminated too. the foreman tested a few spots, made sure the AC system is working fine and suggested it could be the throttle body (back to square one). this isn't his forte so he said best i look for friends who have similar rides to troubleshoot.

called this mechanic in sri kembangan, got my car fixed there once and he is one enthusiastic guy who's crazy over 4G engines, owns a mivec too. anyways, he said the problem could only be around the throttle body area. confirmed by few mechanics already, glad that its narrowed down to that area now :proud:

Have you tried this > https://www.ozvr4.com/threads/iacv-idle-air-control-valve-test.15362/page-2#post-333458